Took the platform off my 02 sunsport and noticed some small holes in the underside, and it was holding some water as a little came dripping out.

Looks like either prior damage or just water had migrated in and previous freeze/thaw had formed holes. As this is just the underside, I am thinking I will make sure all is dry and just marine-tex all the holes. Anyone have any similar experience with a fiberglass swim platform? - If so, any repair suggestions?