The generator in my boat (1996 Beneteau OC 400) needs an overhaul (or replacement). To get it out of the Lazarette on the starboard side, the water heater will have to come out first. I have a concern that the water heater will also need to be replaced and am considering a flash hot water heater rather than the conventional one. Does anyone have experience with flash water heaters on these boats? Do any of you have an opinion of the relative merit of the flash heater versus the conventional water heater with an engine coolant heater loop in it? I would greatly appreciate some insight in this matter. Thanks, Steve