i've landed em, but haven't been on a tramp in a while, thats actually my friend wendy's trampoline, but for doubles:
with fronts, just tuck and huck. land on your back and just keep trying
backs: do the first, then go off axis to land on your side.
haha thats sick..i can almost do everything he did..i used to be able to double haha..and the tramp looks sick when it turns green and pink and shit..ha
dang man back n the old SI days thats all we did. and we did everyything you did ahha. i never landed dub frontys on film though, so scary to lock your feet backk in