[overbored]

gel coat adheres to cured epoxy just as well as cured polyester.
WEST SYSTEM | Projects | Fiberglass Boat Repair and Restoration - Polyester over epoxy
My forty years of experiance says the same thing

 

[overbored]

read the article and you will see it does adhere to cured poly about the same as epoxy. but it does work and very well. here is an instrument mount hatch cover, evercoat over west about 4 years old and still looks new. get stood on almost ever time the main goes up