Just came back from a short break up the mid north coast of NSW.
I did a bit of driving around to get some sailing in.
tried Muddy Bishops but way too shallow. There were heaps of dope-on-a-rope's there and was told its way too shallow for sailboarding.
Got a good sail in at Wallabi Pt but no one else around.
Sailed Wallis Lake by myself for hours with only one other windsurfer out. The lady was a short board beginner so ended sailing by myself having drags with the cat sailors.
One kiter came out for a short while.
The conditions were perfect, strong nor-east, sunny & warm and k's of flat water or chop whatever your choice. I was doing 3 k runs and if you stuffed it or wanted a breather just hope off and it was mostly waist to shoulder deep.

But Im the only one out for 4 days in a row. I know its not a huge population area like Sydney but you would think with all those top spots there would be some sailors around.
I did notice a kite shop in Tuncurry.
Go figure