Richard, I did fly 15 size combat years ago in central Florida with Wild Thing 36" balsa planes. These were too fast and too fragile for us and I have sworn off balsa in this size. My last SSC planes had a flat bat fuselage and a foam wing with 1/4 square hardwood spars. These were cloned from the original "Combat Pig" that Harold Parker was building 10+ years ago. They were rudder and elevator with a lot of dihedral in the wing.

I like combatpigg's idea of a flying wing in 1/2a size so there is no fuselage or tail to break off.

My open A was a Lainer RC design that I got from Wayne when Lanier was a local company here is NE Georgia. These had a 48" foam wing with coro tail on a carbon tube. Although they do fly very well, there was still lots of damage from the speed and weight when we happened to mid-air and there were lots of mid-air collisions!

Wiggy