Best management practices? Right! Another legislated piece of hoo hoo that tries to solve a problem by creating ten more. Sure, good for industry but what about the environment
The op was asking about cleaning
bottoms. Careening and (or) hoisting down is a fine way to do it. As for paint, get it done in a country that still sells the good stuff and you won't have to do it every year or two and you'll be doing the environment
a huge favor. Do you really think paint manufacture, transport, hauling out, sanding
, disposal, and the yet to be discovered problems associated with the "new" systems are better? Pleehuz!