So normally when you run and press ZL+B, you long jump. However I was messing around and it turns out that, if you very quickly press AND release ZL, all of your momentum cancels and you enter the crouchstationary state. This is contrast to holding ZL where you enter a crouchslide state. The difference is that, in the crouchslide state, if you press B you long jump because you have momentum. But in the crouchstationary state, if you press B, you backflip (no momentum). This means that you can very quickly obtain the maximum height irrespective to your momentum by tapping ZL very quickly and pressing B.

Is this known? I'm probably not the first to find this but I'm curious enough to post it.