We have a 1974 Roamer 68. It started out as a 60 house boat design (forward pilot house and portuguese bridge) and our information is that it was taken back to the Chris/Roamer yard and had a cockpit added. We bought it last year and I personally accompanied the surveyor around the boat sounding the hull. I was very concerned that the hull could not be sounded behind the exhaust channels that run 2/3 of the hull length. We had the bottom painted this summer and the hull appeared in good shape. After a couple of weeks back in the water we began to notice water in the bilges and after some demolition found corroded areas and one became a hole when we touched it. My worst fears. The corrosion is at a number of places on both port and starboard on the bulkhead behind the exhaust channels/tubes that run along the outside of the boat just below the water line. I have been pulling out what little hair I have left exploring repair options. It is a fine boat. Handles rough seas very well and built like a tank so I would rather repair than sell. Does any one have any ideas about repair solutions, other than cutting off the exhaust channels and welding new plates into the hull?