I keep my
boat at Fisherman's Village during the
winter but us usually filled up during that season. They probably have room in late summer and if you
dock they might find you a place for the
winter if you wanted to stay.
I spent a couple of seasons at Burnt Store. Not a bad walk to the showers/restrooms if you are in the south basin and reasonable parking. North basin can be a hike and parking is very limited. They have
pump out facilities at the
dock and one day a week they do the whole dock.
As has been said, Walmart, Home Depot facilities are about 9 miles