they go fast and pop up, there's still a slight slope and because they're doing fast when they go up and the hill goes down they have more time in the air - therefore more time to spin. Plus, they can just spin mad fast cause they know exactly how to rotate.
pop make sure your shuolders are square. the key is to set the spin and throw harder. but if you cant spin on axis then keep practicing 3s. one you get comfortable jump and spin a little harder but make sure you have your fundamentals down first or you will just whip out of control trying to throw your spin harder.
say you want to spin to the left, then preload a bit like you would for a jump, and twist your body a bit to the right, then right at the lip throw your right shoulder around.
um practice and jsu twhenever you are standing around, work on spinning (just on ou rfeet, in teh summer.etc) whenever you are board, like eventually you will be doing jump 7's on fla tground
im going to have to disagree on that one, its your hips and chest that need to spin, so that your whole body spins, not just the top half or the bottom half.
maybe u should tape someone doing it and put it in MEGA-MO and watch it. Because MEGO-MO is dramatically inhancing and revolutionizing the sport of skiing.