OK Guys, this is what I have got so far as 'Established and Frequented' potential record speed venues in Australia. The intention is to make a list for the WGPSSRC where record attempts would not need to be pre-announced because they have an established track record of high performance and it is highly likely that there will be a number of speed sailors there on any given potential record breaking day.
If your pet spot is missing it is probably because I have made a judgment that they don't fit into the aforementioned criteria. If you think otherwise please convince me.

If I have got the names wrong or listed the same place under two different names please inform me.
Here is what I have got so far:
Sandy Point, Victoria, Australia
Lake Connewarre, Victoria
Hardies Run, Mandurah, Western Australia, Australia
Pt Walter, Western Australia, Australia
Melville Beach, Western Australia
Woodmans Point, Western Australia, Australia
Burrum Heads, Queensland, Australia
Wellington Point, Queensland, Australia
Victoria Point, Queensland, Australia
Green Island, Queensland, Australia
Stanley, Tasmania, Australia
Boggy Lake, South Australia
Lake Bonney, South Australia