I believe there are 133 moorings in North Sound (between Leverick Bay, Prickly Pear, Saba Rock & BEYC) ... this Anchorage Chart lists the locations of overnight moorings ... # of balls at each location is expressed parenthetically in the list lower on the page. Also, there are 12 moorings in Trellis Bay managed by The Island Last Resort that can be reserved ahead of time with a credit card ... the deposit is then applied to your dinner tab ... check here

Have a great trip! - Mark