I have a 1970 Mariner which has always been in Freshwater. It is in great shape but could use some freshening up. Does it make any sense to paint this fiberglass? If so what is the best material to use? I would be planning to spray more than 1 light coat. If it makes sense I would like to redo the White Deck area as well as the hull.What bottom coating should be used. The boat will now be moored in the Wareham River. Brackish salt water.