Re: Switching from marine head to porta potty
Might affect re-sale value. Anyway, if you look up filling holes in boats with fiberglass, epoxy, backing plates covering the holes. Cost of hauling boat and launching, store on land cost, labor cost, materials. Don Casey's books are a possibility.
The hoses are really tuff and strong and so are the thru hulls and your life may depend on a good job done by somebody in sealing the hole.
..Is there anything that bothers you about the holding tank ? Where are you going to dump the porta potti ?