We have a boat in Mission Bay in San Diego, California and are looking for alternatives to bottom paint and monthly cleaning.<br /><br />On one of the boats in another marina I saw a big inflatable type of float that was keeping the entire boat out of the water. This looks like our best bet since we could also do repairs or install thru-hull fittings. I'm assuming this is an alternative to the bottomliner, armouredhull and similar alternatives. Do you guys know what this aparatus is called and how much it might cost?<br /><br />I'm looking comparing the cost of a haul-out, bottom paint, armoured hull or bottom liner, or this device to keep the hull clean and free of debris.