What paint? If it's just about anything but awlgrip you repair as normal Fill and paint. Are you just trying to save a step?

Gel coat is definitely NOT the answer.
PTP, Marine tex is more of a temporary patch not a permanent repair.


"I said, now, I said ,pay attention boy!"

The cure for anything is salt water - sweat, tears, or the sea
Isak Dinesen
If a man is to be obsessed by something.... I suppose a boat is as good as anything... perhaps a bit better than most.
E. B. White