I bought a 1965 15' corson fiberglass boat. There are a few bad spots on the very bottom of the boat (the keel?). There is water slowly seeping through these spots. What is the best way to drain this water? I am thinking of drilling a small hole in the hull, letting it drain and then patching the holes with a plug and fiberglass. Or I might go through the floor to investigate the problem. Which would be the best way. This boat is just going to be used to "get from point A to B" and need not be in pretty condition or restored condition. Just Safe. Any thoughts?