I'm not really sure how to put this...but I'm completely redoing the interior of my boat. Along the gunnels (sides) it has 1/2" plywood covered with vinyl to match the rest of the boat. I tore off the old trim and wood was completely rotten. These trim items were attached to the fiberglass with vinyl covered buttons that had screws going through the material and wood then through the fiberglass. I'm covering the new stuff myself and do not want to have the buttons and screws going from outside through the stuff then thru the fiberglass. Anyone have any ideas how I can attach this trim around the inside gunnels? I've thought of velcro but not sure it would hold the weight. The wood is 1/2" thick, covered with foam padding and vinyl. The longest/widest piece is about 72"long and 15" wide. My desire is to keep the outside smooth all the way around. Any ideas would be appreciated.