Being a DIYer, we sought a boat yard that allowed such undertaking.Did the bottom and touched up the hull (Poly Glow)and splashed down with the intention of a deck washdown with Orpine Boat Soap and Wax. Put water to the deck and blue streaks appeared to the eyes of the most casual observer.Tried lots of elbow grease and Soft Scrub. NOTHING HAPPENED!Spoke to the yard who proceeded to inform us that this was the "norm" for boatyards.Asked if we washed the deck daily while in the yard?! NO....!!!!Contacted the insurance company after finding out that the boat next to ours DIDN'T observe the regulation of either vacuuming while dry sanding or sheeting the work area. So far the estimates coming in range from $300 and $750 to $3000 (this 3k est. included the Vasoline covering of all the aluminum on board, applying Muriatic Acid and then following up with Clorox. As livaboards, this would necessitate vacating the vessel for about 4 days of rather intensive repairs. Since the repair facility stated they wanted to do this in the water, we decided to protect the environment and NOT have that yard do the work.....ANY INPUT CONCERNING REMOVAL OF BOTTOM PAINT SANDED RESIDUAL PARTICLES AFTER LANDING ON FIBERGLASS DECKS VIA THE AIR/WIND WILL BE APPRECIATED GREATLY.In the end, the griefs of sailing/boating are NOT greater than the gratuities, just gruesome during the process of elimination or so we continue to reconcile on a daily basis.Frank