In a Low% speedrun, you may want to skip the deku leaf. However, all known methods of Trials Skip require the Deku Leaf, and as such, the Trials must be completed. Although Fire and Earth trials are easily completable without the deku leaf, Forest and Wind are a different story. With the Tingle Tuner out of commission while you're inside Ganon's Tower, you will have to find another way to heal yourself out of a zombie hover.
In the Wind Trial, there are pots near the end, and the very leftmost one has a heart inside of it. When you enter, align yourself to this pot with the telescope for exemple and begin your hover. When you get close, you'll need to hover low enough to make a bokoblin aware of you and follow you around. You need it to break the pot, hope that the heart lands in a spot below you, and drop down onto it. From here, just hookshot up and fight Molgera.
For the Forest trial, this one gets even trickier than Wind does. There are 2 pinecones at the end of the tunnel, and the one to the right conveniently has a heart drop. Align yourself to the pinecone with the telescope. Start your very tedious hover until you get near the pinecone. Once you reach the pinecone, pull a bomb, get hit by a Peahat, and immediately continue your hover until you're above one of the heart drops. Drop onto it and fight Kalle Demos to your hearts content.
The second room in Ganon's Tower consists of four doors each leading to a different trial, at the end of which you need to refight the boss of that area. You are supposed to refight all four bosses to break down the stone wall blocking the loading zone to the next area. It is however possible to skip these trials and go right to the loading zone by clipping out of bounds. There are three different ways to do it. The original method uses a bomb ledge clip. It was more recently discovered that it is possible to use a roll clip two different ways to do the exact same thing. All three of these are possible on both The Wind Waker and The Wind Waker HD.
This was the first method of skipping the trials that was found, although it used a frozen bokoblin instead of a bomb which is way more difficult. To do this ledge clip you need to make your way over to the door frame as shown in the video.
It is a common misbelief that you need to tap right on the control stick to move towards the wall. Do not do this. For a ledge clip, you will usually press towards a bomb or whichever item you are using. The item in turn then pushes you through the wall.
A roll clip to skip the trials from the lower level is possible with nothing but the Deku Leaf. To do this you need to grab the ledge so that practically all of Link's left hand is in the wall.
Optionally, you can tap down on the c-stick at some point before cancelling the leaf for the ledge grab to make it easier.
You can use a bomb to push you far enough in to the wall for you to do a roll clip. Do note that this is significantly harder than the bomb ledge clip. If you wish to use a roll clip, it is recommended that you use the alternate (bombless) roll clip method. However, in case you wish to try this, here is a video and a brief description of how to do it.
Once you finally skip the trials, you will be on a staircase that has miniblins spawning at the top. Climb it and go through the door to make your way towards the tower's second section. You can also sidle on the side of the door to trigger the loading zone and skip opening it which is frames faster.
Once going through the loading zone, you will be in a room with two doors and another stone wall that looks like it can be broken down. It can. Through the left door is a room that allows you to spawn a warp portal to the Forsaken Fortress provided you have the boomerang. It also "spawns" the King of Red Lions which you use to go back and forth through said portal. Funnily enough, the King of Red Lions is already spawned, but waiting out of bounds for you to hit the switches. With cheats you can get to him while out of bounds and do some silly stuff. If you wish to see this you can click here.
While very hard, it is possible to open the portal with the bow.
The door to the right is the path you need to take to get the Light Arrows. It is possible to skip these and we will go over that shortly. Once going through the door a short cutscene will play showing you the lights on the wall in a specific order. This is the order you would need to hit the switches in the other room to trigger the warp. Anyway, to continue towards the Light Arrows, jump down the pit. You can pull the Deku Leaf while over the pit to trigger the loading zone faster.
Upon the next area loading you will find yourself in a maze. The maze is the same every time so it is to your benefit to remember the directions for it. They are as follows...
When going through the final (6th) door, you can use a bomb pull before opening the door to skip a cutscene on the other side of the door as it bars itself shut behind Link. For more on that click here.
In this room you will fight Phantom Ganon for the Light Arrows. The fight is very short and extremely easy. He has three different attacks. He can throw a white orb at you, a red orb, or he can spawn all around you with four clones. If he spawns in the air he will be using either the white or red orb. If he spawns on the ground you will know it.
If he spawns in the air and goes to throw a white orb at you, get as close to him as possible before he throws it. If you are close enough you will only have to hit it back once for it to stun him. Simply slash him as he falls to the ground to kill him.
If he spawns in the air and holds a red orb above his head, charge a spin attack by holding B. When he throws the orb it will break in to eight smaller orbs. Release your spin attack when they are all about to hit you so they all fly back to him. Hit him with your sword when he falls to the ground to kill him.
If he spawns all around you with his clones, simply hit the one that spawned behind you. The real one will always spawn behind you so it is best to stand still once you walk forward a little bit. Hit him again to finish him off.
Open the chest for Light Arrows. Go through the door that opens to head back to the main room for this area.
Note: Because of the difficulty of Puppet Ganon Skip, this is most likely TAS only, or for use in a segmented run.
Head over to the room on the right that leads to the Phantom Ganon battle and wait for the cutscene to finish. Read the gossip stone text. Head over to the left near the drop off by the stone tablet. Slash the stone tablet to get your sword to bonk against it then jumpslash to get on top of it. Use bombs to get dry storage, then store the stone tablet text.
Run back over to the door. Open A to open the door. The textbox will appear but don't close it immediately. Once the door has closed behind you, close the textbox to get storage back. Now run over to the door on the opposite side of the room, store it, and then return to the preceding room. Read the gossip stone text again, go back to the middle room, run through the open doorway and leaf pump to the loading zone.
Here is an alternate method that gets storage twice on the stone tablet.
This method allows for skipping both the leaf and the bow on the japanese version, but it requires an item such as the boomerang to open the portal.
First, open the portal. Go to the room where the entrance to the maze lies and get storage off the stone tablet. Store the text and open the door. Close the text as soon as it appears to keep the door open. Get Storage again and store the stone tablets text again. Enter the portal room and make sure the door closes behind you. Close the textbox to get storage. Move KoRL sideways and then store his text. With his text, store the door. Then simply reload the room by going in and out of the room with the stone tablet. This will unload the portal room, but KoRL's position will be the same as when you left, so you can hookshot to him and sail to the loading zone, skipping the Light Arrows without the Deku Leaf.
In the main room at the beginning of the Phantom Ganon battle, preform storage using forest water. Attempt to open the door on the left of the central door that leads to the grand staircase. The door will not open and you will have stored it. Head to the opposite side of the room and open the door. Now return to the previous room. You will notice that the door the you tried to open with storage activated is now open. Jump through it and glide to the loading zone.
Break a pot containing a heart and, with only 1/4 heart, place a bomb next to Link and throw the boomerang at the heart. Then perform a zombie hover to reach one of the door frames before the boomerang comes back to Link. The boomerang will heal Link, and once up there you can perform a ledge clip or a roll clip to go out of bounds and then leaf to the loading zone leading to the final staircase. This trick skips the entire maze as well as picking up the light arrows. However, this also requires doing a backflip lift-off for the hover, since pulling out the sword too early will also make the boomerang come back to Link too early. It is most likely TAS-only.
After obtaining the light arrows, you will go back to the main room, where Phantom Ganon's final battle occurs. By performing a parry off a ground spawn from Phantom Ganon, with the right position and angle, you can land on the door frame without needing a zombie hover, and from there perform a ledge clip or a roll clip to go out of bounds and then simply leaf to the loading zone behind the wall. It is important to note that this trick doesn't skip the light arrows, since Phantom Ganon will only spawn in that room if you did get them in the maze. However, this is useful in order to reach the final fight without a quiver.
At the very top of the grand staircase, align with the pillar on the left as shown. Backflip and pull out the deku leaf. Just as you are about to hit the ledge, put the deku leaf away to grab it, and shuffle your way as far to the right as you can go. Now climb up the ledge and immediately jump towards the wall to clip through it. If you wait too long Link will simply fall off the ledge and you will have to start over. From here, make your way to the loading zone, being careful not to fall.
First, get storage, and perform the Grand Staircase Battle Skip above. Once OoB, throw a bomb into the loading zone and wait a bit, then jump towards the loading zone. By touching the loading zone for exactly one frame, and then on the next frame getting hit by the bomb, Link will be damage boosted out of the loading zone and void-out while the game is loading the next area. That way, the Puppet Ganon room will be loaded, but the cutscene will be cancelled. This skips the Puppet Ganon cutscene.
Because the Puppet Ganon fight can only trigger at the end of the cutscene, and because that cutscene can only play once, you will have to perform a zombie hover with almost perfect mashing towards one of the pots containing a fairy, and get healed by it, in order to reach the final fight.
In Puppet Ganon's chamber, angle yourself towards the path that leads to Ganondorf. Deminish you health to 1/4 heart and zombie hover. This is a mostly luck based hover, as the conditions have to be perfect in order to prevent from getting knocked down by the Keese. Once you are above the red wooden entrance to the Ganondorf battle, wait for a few Keese to come and attack you. In order to survive the hover, you will need to kill a keese while hovering and get the heart they drop. There are several ways to do so:
You can kill the keese with bombs: equip the deku leaf and bombs. Quickly press the button the bombs are on, followed by the deku leaf, then B. If done correctly, you will drop a bomb and get a heart drop from the Keese.
You can kill a keese using the bow.
Or you can kill a keese using the boomerang.
Out of these three methods, only the bombs one is close to RTA-viable.
First off, get storage (by doing dry storage with the warp pot for exemple). Then die and perform a zombie hover to skip Puppet Ganon. Land on one of the platforms at the top of the room and trigger the death cutscene. Wait until the first letters from the Game Over screen pop up, before getting pushed off by Puppet Ganon's strings. That way you can start a hover while the Game Over text is on screen. Select Don't Save and then Continue to get back 3 hearts with a blackened screen. This method of healing is commonly referred to as Fake Death.
If you performed Puppet Ganon Cutscene Skip, there will be no keese spawning in that room, and so the hovers above won't work. Instead, you can still manage to reach the Ganondorf fight by hovering to a fairy pot, breaking it, and getting healed by the fairy.
This method relies on zombie hovering up to the final platform, hitting yourself with bombs to turn around while dead and then opening the warp pot at the top (or heal with the fairy pot next to the warp pot, harder). This method has no RNG if the Puppet Ganon cutscene was skipped.
The Tingle Tuner (an in game item) can not be used in rooms without a map and therefore not in boss rooms. This is the exact same reason why Helmaroc King can not be skipped in the same way.
It is possible to get up the Puppet Ganon room without having to perform one of the many Puppet Ganon Skip methods or use the grappling hook. To do so, defeat Puppet Ganon and climb the red rope. You can go up the chain and line up precisely before starting a zombie hover with bombs. That way you can leaf-drop a bomb to break a pot containing hearts on the floor above. Chaining 3 bombs is highly recommended. Pick up the heart then damage yourself to 0 heart again. For the 2nd hover, simply hover to the warp pot and break it, or if you want to be faster you can also hover to a fairy pot and use that to heal.
In Any%, the hoookshot is skipped, and thus cannot be used to gain access to the Ganondorf fight. Instead a Zombie Hover must be used in conjunction with a morth enemy dropping a heart to successfully get on top of the platform. To do this, you want to stand close to a morth, and then stab it (forward + B) so that Link will kill the morth and it will attach onto Link at the same time. (This sets the flag for the morth to drop a heart when it dies, which can only be activated if Link kills the morth with his sword). Now Link can shake off the morth with a roll (the direction of which is random, but will always be somewhere behind Link), and use the Leaf to blow the morth up onto the platform which has the loading zone to the Ganon fight. After the morth has been shaken off though, Link cannot move at full speed as this will causes the morth to try and move towards Link. This is advantageous after the morth is already up on the platform however, as it can be used to position the morth wherever you want.
Once the morth is positionned, you can start the hover using one of two methods.
If you have bombs, position the morth at the edge of the platform where Link can shoot it with an arrow from below. From here we can place down a bomb, shoot the morth, then press B to immediately slash the bomb and begin the Zombie Hover. Once you've hovered up to the heart, proceed into the loading zone.
This method should only be done if you don't have bombs, as it is much slower and much harder. For this method, place the morth anywhere on the platform, but make sure he is pretty far back. Get into position on the left side of the warp pot, facing the final platform, and with the bow aim at the edge of the yellow texture to get the correct angle. Walk sideways left (the morth won't move) and press B to perform a mid-air jumpslash once you slip off. This will make you jumpslash down, recoil against the middle level and land at the bottom of the structure, near the chain. This way, you will take fall damage as you land, skipping the need for blowing yourself up with bombs.
Then, perform a jumpslash (5 frame window) and mash B to Zombie Hover. You will need very good mashing in order to get up to the left side of the platform. Grind against the left pillar to get to the top and then grind against the ceiling. Because the recoil of the jumpslash gave Link 27 speed, decreasing by one unit each frame, the morth will have moved during 12 frames while you were taking fall damage, and so the morth won't be where you left him exactly. Grind against the top of the platform until you are right above the morth. Then stop mashing and press the bow button twice (once to pull out the bow and once to shoot an arrow). If your second bow press was done frame perfectly, the arrow will kill the morth. Immediately mash B again to zombie hover (make sure you didn't fall under the platform), and pick up the heart. Proceed to the Ganon fight.
The reason for the mid-air bow snipe is that shooting the morth before starting the hover would make the heart disappear before you can get to it.
Instead of taking damage with bombs or fall damage, you can take damage from a morth on fire. Place a morth on top of the final platform after doing the stab trick, place a morth under the platform (you can use pots to push the morth around), then go in front of the ledge morth, and align yourself with the one that will drop the heart. Shoot the morth on the final platform with a normal arrow then the morth right in front of you with a fire arrow. This will cause you to take damage and make you slide back slightly. You can then hover to the heart.