Yo, Go for a swim once a month and while ur down there bring a plastic scraper and a scotchbrite pad. If U do not want to swim give someone a few brews to do it 4U. Done deal!Jo
Roger that!! When it's cold here I put on my dive gear and wetsuit if I have to clean my running gear or someone elses since I no longer have my 35 Duffy. Water that cool will take your breath away for sure.
I used to schedule my yearly haul in the winter and just swim the bottom occasionally the rest of the year to change zincs, and check things out down there. A diver would be cheaper than a haul out. Here they get about 100. to clean running gear and change zincs for you between hauls.
As far as a coating goes, I have no miracle cures to share.....Jo