Has anyone used the product Salt Away for the Trident? Even after thorough rinses with freshwater I have seen salt crystals forming by the motors and had the vertical thruster get stuck. It appears what you are actually trying to rinse is pretty well covered with a protective cap so it is harder to really rinse and lube the motor well, and prolonged submersion is the only way to get rid of the salt.
I have been using Salt Away to flush outboards and rinse the boat for years and seems to work very well. My plan is to fill a bucket with it and leave it in the garage to run the Trident in then soak after dives. Will report back on how it’s working.