Just curious about the standard set-up on a Yamaha 33'. Lift, or water lock muffler. I'm in the final stages of boat acquisition, and the engine's exhaust elbow needs replacing in the worst way possible. However, I'm also wondering about the long-term effects on the rest of the exhaust system if the boat's exhaust was in an almost continuous state of disrepair. How's the access to these remote parts of the boat?