Gel Coat - Tinted poly resin?
Well Gel Coat is a pigmented polyester resin, so somewhat the same thing. Yes, the gelcoat does not cure in an oxygen environment. You have to cover it with something. Use PVA (polyvinyl acetate). This is a water soluble solution that you spray over get coat. It dries over the repair and allows the gel to cure.
I would not use Gel Coat to spray a whole boat, but for a repair, this is what I have used. I think the tinted resin will also be just fine and perhaps easier to deal with (better cure).
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