In my opinion the only place to use gelcoat is if there are areas or crazing/cracks and gouges and the rest of the gelcoat is in good shape. The two part L P is the best solution. My Cal 46 was ""Awlgriped" for 11 years before it was redone. By this time it had become a bit faded and somewhat shopworn. DO NOT COMPOUND or WAX the two parts. I did parts and had done other parts of the deck and deckhouse with two part brush on and roll on "Sterling". This was getting somewhat shop worn at the end of 5 years. I have also used "Brightside" and "Easy Posy". I did my motor home with this one part 3 years ago and it still looks good. Certainly the one parts are easier and cheaper. I feel that a very good professional has to spray the Awlgrip. (My cal 46 looked better than new when I had this done prior to selling her, and certainly got top dollar). In any of these jobs the preparation is the hardest! You must have the surface absolutely clean and free of any wax, oil or silicone. All inperfections must be filled and a good epoxy primer applied. Good Luck, Bob Austin Pensacola, FL. Symbol 41