Hello. I accidently found a glitch that can be very useful for speedrunners. I wanted to ask, is the glitch legal? https://www.youtube.com/watch?time_continue=30&v=H6TpfmQcbGM

So, you all know that Bucket Trick, when you launch yourself right to the snow. Well, HOW THE HELL DO YOU DO IT??? I did it once, but from some reason, I can't do it again. Is there a trick for it to succeed every time?