What am I doing wrong? I slip my boat in the upper Delaware Bay. I am up a creek in very shallow water at low tide. I use my boat at least once a week. It was painted before I put it in at the end of April. Two months later was covered with barnacles . I pulled it and had it power washed and painted again. This time I was covered with barnacles after one month. I am losing power and it kills my gas mileage. I will pull it again and power wash. Don't know if I should even paint again this year as it seems to do no good. A guy near me was painted at the same time with similar paint and is not having near as much trouble as I am. Any ideas?