Re: What's with the slime??
Micron Extra and Micron CSC also do a better job of retarding slime growth if you sail the boat. They are least effective at controlling growth when the boat sits idle for long periods of time.
I'm in the Chesapeake Bay, which is a high-fouling area and even though my hull grows slime, I can either "sail it off" or if I choose to get into the water, a soft car-wash mitt wipes it right off. I try to be very gentle so as not to shorten the life of the paint.
Hard growth? Not a sign of it. It's been one year so far. I figure I'll get another year, then re-paint.
S/V Old Shoes
1973 Pearson 30 #255