Thanks for the replies.
For the record, I'd just like to learn a simple side-flip/barrell roll/lincoln loop with no switch involved. Baby steps and all.
Also, I can do it off a diving board, and I'm pretty sure that I could do it on a trampoline, but it's mid-winter here in AK, so that's not going to happen any time soon.
Anyhow, I'll try to search out a nice dropish jump with a soft landing.