First Person Item Extension

aka Hookshot Extension, Bow Extension, etc.

What animation Link is performing when you enter first person aiming mode affects where the first person item begins shooting from. A common way to make this useful is to hold up while aiming a first person item, press A to cancel, then press the item button again on the next frame. This makes the item start shooting from a little farther beyond where it did before, which can sometimes be used to shoot through walls or to hookshot things that are normally slightly too far away. It's also possible to get first person item extension by pulling the item out during a sidehop.

Tutorial

Hookshot extension with a sidehop

See this page for more information.