Originally Posted by bigmac
I don't know if that's completely true. There are two reasons to paint the bottom...barrier or anti-fouling. MasterCraft recommends bottom painting for any boat that is moored or stays in water, salt water or freshwater, since their warranty specifically excludes gelcoat osmotic blistering. Certainly evaluating for salt or brackish water use is important in the pre-sale survey, but the previous owner may have kept the boat moored in fresh water and was just following MasterCraft's recommendations that a barrier paint be applied to prevent blistering.
Unsure how that is any different from what I said.