Hi all, I'm going to have to catch up with my responses. I'll get back to all of you shortly. With regards to the welcomes,,, thank you. I posted in the "welcome mat". Happy to get this kind of response to one of my questions. Great forum!
I used this on a previous boat to patch holes in the panel and other areas with a "swiss cheese" appearance. Septone - Marine - Body Filler - Gelcoat Repair Filler 400g.
Has to be something similar in USA. I found it helps a lot if you can put masking tape at the back of the hole to be filled. The putty can be final sanded smooth with wet n dry fine sandpaper and polished to be as undetectable as possible.
Thought I'd update. For now I decided to take the easy way out since it turns out I have more pressing maintenance that demands my attention. I went to bed bath and beyond and bought an organizing tray with rubber feet and laid it on the counter over the holes. That gives me a place to put keys or things like a 12 V cell phone charger. I'll get back to this when it moves up on my list. Thanks for all of your advice.