Have you tried contacting anyone at
ASWA? The 'others' in Perth? Or did everyone at AGWA tell you nasty stories about us?
Unfortunately ASWA doesn't have anything better at the moment, and while we have a remote site in development the red tape is taking a very long time to get through. I would recommend you drop a pm to rogerg on this forum, he is the one organising deep sky trips out to the wheatbelt at the moment at new moon until Tammin comes on line.
Usually the locals just go for a drive in the hills and scout some likely locations that hopefully the local hoons don't know about and use that. At one point some of my friends were using a side road out east on the way to York, just parked on the side of the road. It's better if you have company, you never know who else is wandering around out there at strange hours of the night and some people will think you're a burglar heading for their house!