Taping down a solar panel on a PAINTED fiberglass roof?

If you are going to use an adhesive 3M 5200 is about as nasty as it gets. Once it cures nothing moves it. As a boater I am familiar with the stuff. My weapon of choice is 3M 4200. Not as strong as 5200 but once cured still very strong.

Good thing I don't have your nose. I have been in the process of re decking a small boat for the past couple of months. Lots of fiberglass work involving cutting, grinding, drilling, mixing & laying.