On the 26th of December a fellow climber from rockface had the following taken from the main parking lot (the one with the new looking bitumen and shelter)
(brand new) harness, shoes, rope and wallet with $300 cash.
I park their myself despite the warning from others thinking that with the popularity of the place in this heat wave that the traffic in the carpark would put off any breakins although this seems to not be the case.
Alternative: Park 200m down the road at the main golf course parking lot that overlooks the road. The fact that it is exposed and receives traffic should make it more ideal especially if you plan to go at a irregular time.
godluck