RE: Upside-down Plane
I did pretty well with the takeoff and landings. I am pretty used to flying inverted and the Uproar can be slowed to a crawl on landing and be made to jump off the ground on takeoffs. The biggest problem for me was keeping the rudder straight (in my mind) while on the ground since it too is backwards. I am not near as good with the rudder while inverted as I am the elevator. Hence the quick takeoff and landing cheats. If you are building something up specifically for this, the splitting the fin top/bottom sounds like a good idea. This will make the landing gear issues easier to deal with. Good luck.
Mike