If you want to learn to somersault on a trampoline join a trampolining class where you can learn to do it properly. (It doesn't involve swinging your knees up.)
Try a back handspring first, I've found it helps. Or when you flip backwards, instead of tucking, keep your legs straight and perfect your back layout first. And I've found that bouncing a couple of times before doing the flip and swinging my arms help a lot. When you attempt your back flip (which I admit takes quite some guts to do), make sure you untuck quickly in your case. Hope this helps.
This is a very common problem in gymnastics. I have seen many people break their noses and give themselves black eyes because of this issue. The way we fix it is by using a "cowboy straddle". To imagine this position, first sit on the ground with your legs tucked into your chest, then separate your knees wide enough so that your face will fit between your knees. This way you can remain tucked and still avoid any unpleasant face breakage.
Yes
It takes time and lots of practice before you can do a perfect flip
You don't have to do it.
Ten years ago I attempted a backflip on a trampoline, I swung my knees to fast and hit myself in the face. I swore I would never flip again. Well tonight I was at a trampoline park and I wanted to try again. I couldn't bring myself to do it. So I figured if I can do a front flip then I should be fine. Well I go to flip, I make the rotation but when I landed I kneed myself in the face again. I just don't get what I'm doing wrong and why my body refuses to flip. I'm 6 foot 1 148lbs slim athletic build. Any and all advice would be great
