All that salt running through the engine for hours is horrible for a jet, at least that's what I've heard. I've have builders that know my float and have known it because it's been ran in salt before and they can see the damage. I'm no longer a salter, only river water runs through my ride. If anyone knows more than me then I'll defer to them, but as far as I know once you've gone salt you can turn...wait that doesn't work. The point is running in salt because of the way the engine is cooled and etc is very bad. Salt is corrosive and destructive to internals.