Paul,
What Mark and Nick said are pretty well correct, but give the worst and best look to the situation. Please get in touch with some of us when you get in the area. Mark has been working very hard over the years to develop catamaran racing in the area and easier, more flexible launching from Sandy Pt. would be a help to local cat sailing--racing or recreational. There are, as you can tell from the responses, few areas for cat sailors in this, the "sailing capital of the world".

David
H20