I have a 17' fibreglass runabout. When covered, I guess the rain causes some kind of run-off from the cover onto the boat itself, and the runoff causes stains on the boat. This is a grey canvas cover. The cover is relatively clean so I'm guessing the stains might be coming from the dye in the cover but I'm not sure, it's not coming from the snaps though. Any idea what's up and what to do about it?
Thanks,
Chris
Thanks,
Chris