So I've decided to pick all you experts brains to see if there is a way to repair my main tank on my 1988 25' Sailfish. Last fall I picked this boat up and thought it was in great shape. Needless to say the only thing that is in good shape is the polished hull. I knew I had to replace the deck panels that cover the fuel tanks (no big deal), when I pulled the covers I found the tanks covered in sludge. I decided to pull the tanks to clean them and the coffin boxs they reside in. Upon pulling and cleaning the tanks, I found their was a decent amount of galvanic corrosion and some pinholes in them. The bottoms of the tanks are worn a bit thinner than original. Is there any decent way to coat them and patch holes? I do have provisions to weld aluminum (yes I know I have to purge vapors). Is it safe to epoxy coat and maybe even add some fiberglass for structural integrity? The reason I ask is because of the 1200.00 cost to have a new tank built, and then the 4-500 extra for new filters, lines, tank beds, and other associated stuff. With a little effort I was thinking maybe, just maybe I can buy some more time until I need to replace them. Also, if anyone has ever replaced a fuel fill line on a sailfish I would like to talk with you regarding how. Thanks a lot guys in advance.