I think that is the way to do it, inside and outside are F/G, why does the inside have to be plywood? It's just going to rot again sometime. Water will get in do to small cracks in the glass overtime. In cold climates freezing will expand and make voids, which makes room for more water. Technology with this and Coosa board just makes sense. Hulls used to be wood from the beginning of time to the first F/G hull. Why use any wood in boats.