Charlie, I'm thinking that sanding an ablative paint is a waste of effort. Since the surface is constantly being refreshed, the smooth surface that you create by sanding is gone in a short time frame. If you want a super smooth bottom I would think that it would be better to use a hard, non-ablative paint and spend a little money having a dive service scrub the bottom on a monthly basis. For our area, I have had great success with Trinidad. My last bottom job lasted for more than 5 years. James Taylor S/V Delaney C&C 38 Oriental, NC
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