I lived in Sydney for a while and in my first week there I went to CYCA and put my name on the whiteboard, withing 30 minutes I had a place on a crew for one of the more relaxed Monday evening races. Crewed on the same boat several times and had a great time.
eianm, Pittwater is a great place to have your boat, we sailed dinghies out of BayView whilst we were there. Maybe back there next January too
deacm, have a great time in Oz