Hi ianthom... ,
well I have no salt wather in the near but I was only one time on salt water with my power boat and after this i must change one modul and two corrodet conectors. There is possibility to use some preservative oil mixture in spray.
To preserv any humidity I use the "
Nanoprotech" for electronic. Its perfect because it doesnt leave any greasy film on the surface. And just for shure I put one small bag of
Silicagel in to the hull. You can find it in the box with new shoes. But the spray should protect the conectors for one season. The cleaning process after sailing on salt water with fresh wather is realy necessary. To protect the hull surface use polishing wax for cars. It protect the painting and prevent before salty white stains ;).
BR
Othello