ORIGINAL: Troy-RCU
What about a thin piece of ply on the bottom to act as a skid and double as a grip to hand launch? Wouldn't add any significant drag but would save the covering and sheeting on rough runways. Still looking for a home for my 6.5 and this might be the ticket!
I would absolutely want a skid on a rough runway but it should be just fine on grass. I have hundreds of flights on belly lander with occasional tears in the covering being the biggest problem. A hand grip for launching would be nice. I was thinking about something rough textured on the side of the fuse just behind the engine may work.
Aren't you an electric guy? The plans show a back plate mount for an electric motor. The servos could be mounted behind the rear spar and there would be tons of room for a $500 battery behind a Neu 1509. If not a 6.5 would work.