Antifouling is always a good point of discussion. There is varied experiences among the sailors and great local variation in fouling severity & type , so views & experience will be diverse. I found my 20 year old Copper Coat quite poor in the south coast of the UK (fouling in 1 month, keeping the boat near Porchester), so professionally renewed it. An expensive job but having experimented with applying it myself, it was clear this was an impossible job for me. Too difficult. This year(3 years later), after 2 months in salt water & the weed was starting. Probably due to the high level of fertilisers & nutrients in the east coast rivers where we are now. One thing to note- I had more than expected wear in my aluminium rudder post at the lower bearing. Copper coat may set up a galvanic circuit with this, eroding the shaft. Perhaps I should have left a block around the rudder post clear & used conventional anti-fouling near the post. Or perhaps it was just wear.
