So this is just a cheap test run without magnets
3M Command small plastic with metal hooks, attached by double stick tape just above windshield line, on the fiberglass
can be easily removed and cleaned off
You only need the 1 pound holding power. So they are the smaller hooks.
(I can also use the "all plastic" ones and spray paint with light beige to match the fiberglass so they can stay on indefinitely and won't be noticeable)
The one caveat is that you need a small ladder/step stool (which I carry)
Mine gets me to a standing platform of 36" + my 8' reach.
It's a little trouble, but can be installed very quickly.
I'll attached photos later today when I've got the RV out and about on a planned shopping trip.
https://www.amazon.com/Command-Strip...19A14PYPZ9H0TH