Yes I stayed there for 3 days last May/June. It is very very skinny but well marked. I would only go in at high tide. There is very little to do there, but it is very peaceful.
It is first come first serve to tie off on the bulk head
. I would guess to say around 25 boats depending on size. You MUST pay the daily fee. It is on the honor system, but the park service
There is some good snorkling on the Atlantic side.
Once a day, the park service
will open the "lighthouse" and give tours. Kinda fun.
There are Land Heads, but on holidays, are blocked up by early morning and the park service clears them out in the PM.
We had a great time as we were with a pretty large group.