How far are you in Skyward Sword?

[Khuutra]

RolStoppable said:

Khuutra said:
The final boss is best fought without the trick, it's true. Granted if your timing is even a little off, using the trick is still tough, but without it he's a complete nightmare (in the best way).

What is this trick?

I don't know how to do spoiler marks anymore.