StoseHonestly I got a tramp to practice ski tricks, and I regret it. I don't think it helps with learning new inverts at all, they feel so different on skis. The only good thing is that you can build air awareness, but it really isn't worth the money
I disagree I've been using my trampoline for ever and I found it helped me hugely with learning flips mainly because if I can do a particular flip on a trampoline I feel a lot more confident trying it on skis and also doing it on a trampoline gives me a rough idea of what it's like on skis.
Even if you don't find the trampoline helpful for skiing it still is a shit ton of fun so I think it's worth the investment.
I can't remember the name and my trampoline (it's dark at the moment so I can't go and look) but it's pretty decent. I'd say stick to traditional springs instead of the spring free design trampolines because they're more expensive and don't bounce as nice also don't bother with safety nets and that shit because the likelihood of you falling off a trampoline pretty low, most of the time when you hurt yourself on a trampoline it's because you land funny on the mat.
Make sure you buy a decent trampoline though don't be a cheap ass and buy a trash one, a good one will last longer and be more bouncy so you can actually try big tricks on it.
I like to ski with loose underpants or boxers on so my balls can swish around and chill.