Yes, there are a number of places in the Abacos with balls. At Green Turtle, both Black and White sounds have them. In Hopetown Harbor, you can only use balls (not enough room, otherwise). Lots in other places, too.
A word of caution, though: Because they are all privately owned, there is no consistency in terms of appearance,
rigging or
anchor. Be prepared to have to "figure it out". Some are marked with
ownership, some aren't. I recommend that you dive on the ball and go see if the
rigging and anchor can deal with your
boat.
Don't do like one fellow did at Green Turtle: The owner used one of the those kiddie bouncy balls for the float. The boater tied on to the rubber handle at the top. A good gust came in that night and you can figure out what happened!
Have fun!
ID