need some help folks.... three months ago bought a nice looking 2004 19' pontoon boat from a couple in their eighties....nice folks...told me they could not handle getting it on and off the trailer so sold it to me....originally they had it around saltwater but had moved it to freshwater where I bought it...told me it had very few hours on it and I think that is true too...I have had it out 5-6 times and both toons leak substantially....now I have learned that the pontoon bottoms are seriously damaged from saltwater and from sitting on trailer bunks (carpeted) that contain salt. some say have new aluminum welded in...some say fill with epoxy and a sealer coat....some say replace pontoons...open to any ideas ??????