At Mackey Park, Tempe and also at Royal Sydney Golf Club. Probably 4 qualifying blocks followed by a best-of-3 knockout, plus consolation events.
https://portal.revolutionise.com.au/cnsw/events/319519

NSW GC Open Singles Championship

Red block

Kevin McGlynn Werner Borkhardt Andrew Bissex Richard Christian Peter Sinclair Ted Woodley Michael Chang Ann Clifton Wins Net
Hoops
#
Kevin McGlynn (Canberra) 7 won 7 won 3 lost 7 won 7 won 6 won 7 won 6 15 1
Werner Borkhardt (Byron Bay) 2 lost 7 won 6 won 6 lost 5 lost 5 lost 7 won 3 -3 =5
Andrew Bissex (Forster) 5 lost 4 lost 7 won 6 lost 1 lost 7 won 5 lost 2 -6 =7
Richard Christian (Royal Sydney Golf Club) 5 won 4 lost 2 lost 7 won 1 lost 4 lost 7 won 3 -9 =5
Peter Sinclair (Marrickville) 5 lost 7 won 7 won 6 lost 7 won 7 won 4 lost 4 2 =2
Ted Woodley (Chatswood) 6 lost 7 won 7 won 7 won 4 lost 6 lost 7 won 4 14 =2
Michael Chang (Mosman) 3 lost 7 won 4 lost 5 won 6 lost 7 won 7 won 4 3 =2
Ann Clifton (Queanbeyan) 3 lost 5 lost 7 won 5 lost 5 won 2 lost 1 lost 2 -16 =7

There is no known tie break method.