We painted the bottom of our 46 foot sailboat while on the hard
in San Carlos
in November of 2010. We pulled the boat out in April of 2012 and found very few areas of growth on the bottom. The only reason we repainted the bottom was that we didn't have any of the paint
to touch up along the water
line. It's the only place we had any growth since the paint
wore off there during the infrequent cleanings we did. It lasted us clear to Fiji
. One of the contractors in the yard looked at the bottom when we pulled it and said it really didn't need to be painted and that is after 18 months and 7,500 miles across the Pacific.
If I could get it out here, I'd do it in a heart beat.