I'm about to build my 4th rib & plank (wood/canvas style) canoe. I use dacron in place of canvas to cover the wood hull. I want to use an epoxy/graphite mix on the cloth below the waterline to provide extra toughness. But I want to avoid the epoxy soaking thru & adhering to the wood hull. Before I apply the cloth, I varnish the hull to make a very smooth surface, then apply turtlewax paste car wax. Will this prevent epoxy adhesion. If not, what technique would you recommend? Tks much!