http://www.meetup.com/goldcoastscuba/
Hey man, I travel down there frequently and was diving as recently as Monday night. Look up these guys from Gold Coast, they dive 2 or 3 times a week. Shore dives mainly, so its cheap but a lot of them will do boat dives as well. I’m sure they can give you some pointers on operators.
Look up divergirl4u on DB as well and reach out to Kim, she is a super person and willing to help where she can.