What can i say, i love this game, you have to play the game with the balance board sideways (as with a real snowboard) and lean forward or backwards to veer left or right. Leaning on your leading foot accelerates the board, while leaning on your backfoot slows you down and enables sharper turning.
Performing tricks is probably the single hardest part of this game, not that i don't enjoy the difficulty - it rocks! Keeping presurre on certain parts of the board, such as your heels, will cause the board and rider to rotate anti-clockwise whilst in mid air, clock wise if you lean on your toes. Pressing a or b on the wii remote activates a simple trick, when used in conjunction with the rotations, you can rack up huge bonuses to your tricks, as is required once you finally catch up with mr white!!
I'd suggest reading the user manual with this game religiously before playing, in order to accustom yourself with the various tricks at your disposal.
All in all, simply the best (er only) home console snowboarding game you can play with your feet, my only gripe being that you have to buy another copy of wii fit and balance board in order to have an equally matched 2 player with 2 boards