Do Some Research, then use Ablative Paint
Ron:There is a type of bottom paint known as "Ablative". Basically what this comes down to is the paint disolves, and barnacles don't grow on it, as long as a layer of it is still there. You absolutely want to use Ablative bottom paint. It's worth it, because it can be used for several years (depending on the temp of your water, and how you scrub the bottom). It would be worth it, if it cost even more. The other types must be applied every year, and then they build up. Soon you have many, many, layers on your boat, and it begins to flake and it is a ton of work to get all the old paint off. If you don't have any paint on now, do your research on how to properly prep your bottom, then make sure that you go with an "Ablative" type of bottom paint. I did paint it with one color, as a marker color, (Green) followed by a top color, (Black). Then when the green begins to show, I know it time to repaint it with another coat of the black. This does work well. Aldo