RE: Double truss control horns
I see your point. I may consider a surrounding plate that would be permanently mounted to the surface. That would speed up installation, but really it goes pretty quickly as it is once you have the process down.
Back to the horn subject...how do you feel about G10 as opposed to carbon fiber or aluminum? The G10 would bond easier with CA to the wood spacers for quicker assembly...much cheaper also.
-Tom