My previous boat had a fair bit of anti foul build up on it where as on the current one (actually older than the previous one) i can just about pressure clean it back to a white hull as the previous owner (deceased) son told me at the time of survey that his father used to sand it right back each time he slipped it
The photo below was taken when it was slipped for the survey and after a pressure clean there was a lot of white showing and not a lot of fouling considering it has been in the water for 18 months
When i did it in April i only put one coat on and i intend to slip it in December and see how much growth is on it and give it a pressure clean off
One of the local boat builders here says one coat is enough in the cool Tassie waters so it will be interesting to see how it looks
It is nice to have a smooth hull surface to work with when slipping it but time will tell whether i am doing the right thing
Regards Don