Derreck Musgrove (Fuzz) worked at the same company as me for many years only left 2 years ago. He was a fast Yamaha rider back in the late '70s. He still has a toned down version of his hair and has not really changed that much although is much more 'reserved' now. He lives n Singleton and I run into him every so often.
Graeme Boyd rode a VB250 Monty in 1977. There was only about 5 riders on Montesa at that stage in NSW.
I thought Dunlop Lea and Foster Park had both closed before '79? Maybe not.
There was also a great track near Dungog where the wettest NSW 500 title I have ever seen was held. I'm pretty sure a few bikes are still buried out there. I'm not sure of the exact location now. I know Les Richter was in the Dungog Club at that time and was involved in running some events I seem to remember.
Who can forget Jilliby Park near Wyong