I should've added that about 3 or 4 years ago, I finally figured out how to flat spin. It was with the [link=http://www.rcuniverse.com/forum/m_1201120/tm.htm]Cor-Star 60 v 2.0[/link] (my own coroplast copy design of the popular SIG 4*). I did 28 flat spin rotations with it one day. It was just a tiny dot, way up there; but all I had to do was throw in full up elevator, full left rudder, and full right aileron, and it would eventually stall and spin. Duane Habets of the scale 502 Air Tractor fame was there to count it with me. Since then, I set up almost all my planes (not the scale ones) to flat spin. Flat spinning really gave me a reason to get to know and love the rudder.

Not to mention the CG benefits flat spininng reveals.