You absolutely want barrier coat under bottom paint. There are tables that will tell you how many gallons of barrier coat to develop the proper mil thickness. The best application technique is to roll on thin coats. Alternating colors allows you to see if you missed any spots. There are 4 thin coats on my hull which gives uniform thickness and complete coverage. This is a job you will likely only do once. Worth the effort to do it well!
I'm tired of fast moves, I've got a slow groove, on my mind.....
I want to spend some time, Not come and go in a heated rush.....
by The Pointer Sisters