From Sanctuary Point your only real option is Currambene Creek (
goo.gl/maps/ZGjYRn5Nfnq ) at Huskisson but you may have a wait to get a mooring there as it is a bit congested.
The other place that you can have is Callala Bay (
goo.gl/maps/ZywRmunskYy ) but that would entail a lengthy drive. Nowhere in the Bay is a great anchorage, it all depends on the prevailing winds and weather. No one in the Bay has insurance, the companies deem it too risky to cover them. Plus, I think all new moorings in Callala now have to be environmentally friendly to protect the sea grass.