Tim, I looked at a gelplane in action at a boat repair facility "down the shore" a couple of years ago. On the face of it, it's an attractive option. However, I think the challenge is that in my experience, the gelcoat thickness on a glider wing varies considerably. I'm sure you've noticed places where you can almost see the glass or carbon cloth through the gelcoat and others where it's completely opaque. I don't know how you'd avoid lopping off some of the outer layer of skins. I have heard that one or two shops in Europe have some experience with them, so maybe there's something to it?

P3