Rodeos

There is one thing about Rodeos that i have never been quite sure about. i am never sure if the back flip is supposed to be a strait up back flip, as in an uphill lincoln loop, or a barrel roll type back flip (jester flip?). The lincoln loop version does look a little bit like a flatspin in my head, but I have no problem picturing either of them, im just not sure which one is technically the right way to do it or if it doesnt matter. Should i assume its the same for misties, just obviousley the frontflip version?

Well, its a backflip with rotation. Doing a backflip, with a 180, would considered a rodeo 540. with a 360 it would be a 720. What im trying to figure out is the manner which you do the backflip.