I have a 1996 Ranger R70 Sport with fiberglass damage in the bilge from battery acid. I have had a problem with my on-board battery charger boiling the batteries (another problem altogether). The bilge stays wet all the time. Now the gelcoat (?) inside the bilge has cracks, and I can pull chips off where the fiber is exposed below. I didn't know fiberglass would react like this to battery acid. Has anyone ever encountered this? And how serious is it? Does this require professional attention, or can I just remove the loose surface and repair?