The fish box lids on my 95 Islander were badly deteriorated. The edges were badly cracked and delaminating around the edges. There were some cracks and repairs done on the surface which presented a poor appearance with the mottled color and textures. I started by routing away about 1/2 of the thickness around the lip.
Next I layered resin and glass cloth and used silica filler to build it up. Then I filled with 407 to smooth the surface. I also built a very large radius fillet using layers of cloth and resin on the underside to strengthen and stiffen the structure to prevent flexing which is what I believe caused the surface problems.
I also added a piece of plywood underneath the starboard seat to reinforce it as well. I was not able to install plywood on the port side cover because of the divider for the baitwell and fishbox. I wasn't too concerned about the smoothness on the underside and sprayed them with gelcoat that I matched by mixing white base gelcoat with a tiny dab of black, a little more yellow and a little red. I tested it by smearing patches onto a neighboring area of the hull until I was satisfied with the color. ( I have tried the Spectrum colors matched coating in the past and was not pleased at all) I also used some Duratech reducer which produces a fabulous finish with very little sanding or orange peel.
Finally, the top sides. Lots of sanding, filling and more sanding with 220 grit to smooth it off.
Some heavy coatings of gel around the edges and a lighter coat on the seat area. Then, masking off the edges to apply a textured splatter coat as suggested by GW204. Sorry you can not see the texture but it is an exact match to the gunwale tops. Pics were taken under the tarp in the rain.
Next I layered resin and glass cloth and used silica filler to build it up. Then I filled with 407 to smooth the surface. I also built a very large radius fillet using layers of cloth and resin on the underside to strengthen and stiffen the structure to prevent flexing which is what I believe caused the surface problems.
Finally, the top sides. Lots of sanding, filling and more sanding with 220 grit to smooth it off.
Some heavy coatings of gel around the edges and a lighter coat on the seat area. Then, masking off the edges to apply a textured splatter coat as suggested by GW204. Sorry you can not see the texture but it is an exact match to the gunwale tops. Pics were taken under the tarp in the rain.