hey that's another good idea....... act like you had a bet with some guy... one of your friends or something... make it look like your really trying hard to do the backflip.. once you do it have him act shocked, then hand you money... then walk away.. that's so awesome.. I'm gonna have to try it.
I can only do a backflip on a trampoline though (well, landing on one)... I can jump from the pole, do the backflip, and land on my feet.. but it's a soft landing... bet the ground's a bit different.