well, i don't know if paying for the class is worth it. you gotta look into who is coaching, what they really know, how cool they are, etc. as for if learning tricks on a trampoline is worth it as far as transferring the skills over to snow, most definitely. anything that gets your air awareness up is good for trying tricks on snow... what doing off axis tricks on snow really comes down to is your ability to not get lost while doing the trick and knowing where your landing is going to come from, the rest is essentially just enjoying the ride.