Barry, you sooooooooo need a profile. Like yer list of birds.

I like flat spins too. You want some thing with a bigass rudder.

Profiles do them great and the Chinn Yakk will do all of them all. Upright, inverted and climbing inverted, slow or fast. There is some vid of a Chinn Yakk doing upright flatspin landings and taking off again.