Re: Fiberglass dinghy restoration, some advice please.
There are gel coat peelers--sort of like an electric plane. You can buy one, but maybe farm out that part of the job, than do the re-skin/new finish yourself.
I see you are in New Hampshire. I Have 2.5 gallons of Interlux 2000E/2001 epoxy hull repair coating that is simply aging under my workbench. Its leftover, but unopened, from a blister repair job I did for 20-foot powerboat last year. If you can sand/peel/grind whatever to a fair surface without exposing the actual fibers of the reinforcing fabric, it will work fine to seal up the hull and provide an excellent base for the finish coat of your choice. (If you do expose the fabric, absolutely use a high-solids regular epoxy as Todd describes above)
Anyway, its yours for the taking--meaning you pay and arrange the shipping--if you would like it. Just PM me.
This new ship here is fitted according to the reported increase of knowledge among mankind. Namely, she is cumbered end to end with bells and trumpets and clocks and wires. It has been told to me she can call voices out of the air or the waters to con the ship while her crew sleep. But sleep though lightly. It has not yet been told to me that the sea has ceased to be the sea.--Rudyard Kipling