Often a boat hasn't had an ablative type paint on it and there are so many layers it is weight, roughness and the inability to get new paint to hold on that causes people to blast or grind down...
Do you mean a hard or modified epoxy paint? Ablatives (sloughing) paint wear off with use. The modified epoxy's usually don't. In the hard paints it's the biocide, not the paint itself that usually wears away. We've had to strip 3 boats with modified epoxy because of the paint build up with the symptoms that you mentioned.
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