Brett,
Curtain can be an intersting dive, when the water is clear. Gives you plenty of practise is clearing yourself of mono.
Another intersting shallow dive is at Bulwer. The wrecks on the beach, about 100 yards south where the first 4wd track enters. There are a bunch of assorted bits and pieces there. Haven't dived it for a while but city council bus, VW beetle, car tyres etc. The area attracts some good fish. and max dept of about 13m.