Hello. I picked up an American Traders Algonquin that has some cracks in the ribs at several isolated spots in the boat. The damaged spots are spread out and don't really compromise the overall strength of the hull, so I don't plan on replacing the ribs anytime soon, but I would like to reinforce them with some fiberglass/epoxy. Is it critical in making these repairs that I strip/sand the repair area down to bare wood to apply the epoxy, or is it enough to give it a light sanding and apply the fiberglass/epoxy onto this non-wood surface? Any other approaches anyone can recommend? Thanks!