Boatyard is the way to go. Before you even start to do boat work in a residential neighborhood you might want to check with the EPA and State health
people and all your neighbors. You could get all set up in your yard at some expense and end up with a ten thousand dollar fine and pissed off neighbors. Would you like to live next door to someone redoing their bottom?
Even in a boatyard tempers can flair. I was next to a sailboat for a month while he ground off his bottom and the dust and dirt were horrendous. then the jerk insisted the whole boatyard shut down so he could get that perfect finish. Typical sailor, spends days varnishing a little strip of wood on his deck
and then dumps his sewage in the water
rather than walk to the bathroom on land.