alllright, id suggest a ramp into a lake or pool or something, if no water, maybe a snowbank, if none of those, just go for it on a ramp and commit, 9/10 times you wont get hurt as much if you commit than if you bail.
dont manual up the tranny, sort of follow it, instead of keeping your head up while you go up it so you go forward, keep leaning back with the tranny so you come off it with a flip going, but you wont hit your head. tuck up and if you make at least half the flip youll be able to see ground agian and save yourself