I've been trying to do spins lately, and things havent been going well. I know how to do them, I just can't. I seem to freeze up while in the air, or can't finish the turn. This happens a lot when I try to 180 off boxes and such (even though I can easily just air to fakie on the snow), but I can more or less control the 180. Any tips?
when moving over a Bump, knob, roller etc... try buttering or reverting the whole 180 around while your board is still on the ground, this eliminates alot of the risk of falling. This will help get your rotation down and put you into a semi-air situation. Once you get this technique nailed, over ther same rollers youve mastered, start bringing your knees up so you board leaves the ground. The transition between on ground 180's and in the air 180's should be pretty smooth.