Had a blast this weekend at Michigan Jets with my DF Enforcer. Most of the turbine pilots could not believe how fast it is.

It's not hard to put functiional rudders on one, see picture. I see no reason why it wouldn't do a knife edge, altough I haven't tried it. I just like having rudders for loops, immelmans, split S's, and lining up with the runway on landing approaches.

Joe