Thanks Don and Tom, .....
Don, this is what I wrote to Steve D., and I am adding it to your post. I did refinish some of the gelcoat. Actually, I did a great deal of it in sections. The gelcoat was applied after all reconstuction was done. I sprayed it in sections in the areas that needed renewing or refinishing. Used the little "preval" paint sprayers.. not sure of that spelling, but you can get them at West Marine, Boaters World and at most automotive stores. Mixed about 3.5 oz of gelcoat (white) with 30 drops of the hardener, mixed well, then added about 4 oz of acetone to thin. Mixed well and proceeded to spray the areas that needed gelcoating. After about 30 minutes, I sprayed the same areas with mold release wax with a new unused "preval" sprayer. Then leave for it to cure until the next day when you can wash off all the green wax, and behold.. new gelcoat. The nonskid was then applied last. I used tape to tape off the areas I wanted nonskid, cleaned well with alcohol and sanded to rough up the surface. Then used the interlux enamel primer, very thick, rolled on and while still wet, sprinkled a very high grade sand (home depot) until entire surface had a very even coat of sand. Allowed to dry for a few hours, then gently vacumed away excess sand. Then proceeded to coat with color coat which I prepared with flattening agent, same interlux brand, and also added the interlux nonskid beads, all together mixed and applied several coats with roller allowing a few hours between each coat. Tape was removed after about 3 coats, but I used 5 or 6 coats to give the amount of fill to the coarse sand surface. Very durable, cleans well with brush and makes a very good nonskid surface. Thanks for your nice comments.