I would seriously check into a closed loop system. See if your engine manufacturer has one available as an upgrade. If not, at least contact the manufacturer regarding zinc anodes and see if they have any specific places to put them on the block, mainfolds, drive unit, etc. You can google zinc anodes and do some research on what they do. I have not put my 247 in saltwater and don't plan too. But when I lived in San Diego and use to ride around Fiesta Island on PWC's they all had zinc anodes in the heads. And they all were sacrificed. By the end of the season. I have never really had any rust on the exterior of the engine, minus some minor surface rust. We always rinsed thoroughly. As for the trailer, its going to get surface rust no matter what. Mostly in the welded joints and near anywhere it drains. (Message edited by stewart on March 08, 2008)
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