Bilge and pump out fittings

They are tucked up in the gunnel hard to get at no doubt. Have you considered spraying them with a coating or paint? It wont hold forever as they are plastic, though may be easier. BCB

In addition there are some plastic adhesion promoters at your local automotive store and also plastic paint as opposed to regular automotive type paints in spray cans… SEM is a great product to look at … prepped correctly you might be surprised how long it will hold up… Good luck and ask them to tell you how to use the SEM products when you are at the local automotive parts store they have instruction sheets right there..