I have a 17' macgregor. It's a 1969 model. While looking over the boat, I noticed end grain of wood on the edge where the break-away is and also the very bottom edge. It might not have been totally kosher, but I used Bondo body filler (with hardener) to fill and smooth. It looks good and has original level. My question is: will gel coat adhere to it or is there some other paint that would work (or did I really screw up)?