I am trying to refinish an antique pontoon paddle boat. The pontoons
are rusting in places but I am welding patches to fix that problem. I
am not a great welder and want to make sure the boat is waterproof so I
was thinking of laying down fiberglass over to cover any holes I might
have that i can't see. Is this the best material to use and how should
I prepare the surface for laying the fiberglass, or better cover, down?