It definitely isn't, but you need to have the right expectations. It creates muscle memory for a part of the tricks, doesn't teach whole tricks. For example, the last summer I trained in trampoline once a week with the SA tramp board, and my ability to grab improved significantly this winter. I can see that I have a muscle memory created for various tweaked grab positions, so once I get to the air, I can arrange myself to the right position very quickly (something I wasn't able to do before). On the other hand, I've had some strong bad habits when it comes to approaching the jumps and take-off and trampoline training didn't help me with those at all.I'd be surprised if most of that gear isn't more of a placebo in regards to off snow training, in fact I'm curious whether it might even introduce bad habits.