Thanks for that Ian, as I said in another thread, I learn from these things. Most of our sport/ rec flying around here takes place at strips like Clifton, Watts Bridge, Boonah, Clifton, Coominya, Kilcoy and Gatton as well as Warwick that I fly from and is about 12kms from the township, so I am quoting from my knowledge base but I am happy to stand corrected. When I first arrived in Australia our capital city GA field (Archerfield) was a very busy field with parallel runways operating and on weekends very busy circuits and probably a hundred or so aircraft on tie downs. A very different place now on any day that I've been there (34yrs later) and without flying school traffic there wouldn't be a lot left I think. Once again I stand to be corrected as I am really not familiar with Sydney, Melbourne, Perth, Darwin, Canberra or Hobart in sport aviation terms.