Duane Gall (Hi DHG ) has reported that his Stinger tracks the turns really nicely. He is using wheel pants, which are allowed on planes that had them in real life. When I mentioned my theory about the turtle decks being advantageous, he connected the same principal to the wheel pants on the Stinger.

I started my Hughes H1-B project because I really believe that the height of a turtle decked fuselage can help.

When I had my RealFlight G2 server up and running, I got to watch Dave Norman and Mike Deneve fly. Both stay at a knife edge the whole time (almost) in the simulator. I practiced and practiced. I even practiced with Mode 1 which is actually quite handy for full time knife edge.

Then I went out and did it with the F3D/30. I had to use a fair amount of rudder. So I added a 1/4" piece of balsa from the canopy high point back to the fin. Less rudder was required, and the plane tracked better.

I could very well be wrong with this theory though. By increasing the height of the fuselage in the rear, you increase the wetted area. So the additional drag could nullify the added stability.