We've lived aboard for 38 years, mostly in Florida with crusing to the Bahamas and up to Maine. Our average time between haul outs for bottom painting is three years, but I frequently clean the botom with a light rub of a 3M pad. We have careened for cleaning and painted on several ocassions,- not a fearful process, but hard work. Most problematic growth appears within the first three feet reached from the water line and on the prop and rudder. We can manage to clear these surfaces without air tanks or diving gear beyond mask, snorkel and fins. We've paid as little as $500 for a haul out with DIY option and as much as $2,000 to have it all done by the yard for our 41' boat. 'take care and joy, Aythya crew