sandbar
seriously, find a nice bank (hard sand) and beach her. Paint one side per tidal cycle, I attached a small anchor and line to a halyard and used it force the boat to heel whichever way I needed so it would fall over on the correct side. At dead low dig some sand away from the keel to paint the tip (not too much or it will re-bury itself!) I used muratic acid, scrubby pads, and a scraper along with my onboard water supply to clean the bottom. Try to situate yourself so the sun will dry the bottom faster. Piece-o-cake and free!