I am trying to remember whether you can anchor at Havre Aubert. There were about five cruising boats there and all were tied up to the very substantial dock in front of the Club Nautique. There was a reasonably large bay next to the dock but I seem to remember that it was quite shallow. You could ask the locals about the actual depths since the chart was not very detailed.
It is lovely spot to visit, enjoy.
Finished the circumnavigation in early February in Grenada. Have to work on a book project for the next several months so the boat will be waiting for next year.