Welcome to town Nicolaas. Including you there are now 3 regular wave sailors in town, and maybe another 3-4 guys on top of the regulars that you see in the surf every now and then.
3-4 months ago I answered this exact question for Climber who moved down from Qld at Chrissy......I will aim to locate the thread and put it up here

If you are into fast sailing on flatter water, Queens Lake (down the hwy and turn left into Bob's Ck Rd) or the river at Jordans Boating centre is the go. Ask for Mark Jordan if you go into the shop on the river, introduce yourself, he is a top bloke and the go to man to get your gear locally (I noticed on your profile you are after some gear, Mark has some second hand gear in good condition, give him a call on 65831005, or drop by his boating shop).
Hope to see you around soon.....Adam (Mo: 0419 146 697)
EDIT: here are the posts of interestwww.seabreeze.com.au/forums/Windsurfing/New-South-Wales/Port-Macquarie/?SearchTerms=Port,MacquarieA bit of chatter here regarding Queens lake
www.seabreeze.com.au/forums/Windsurfing/New-South-Wales/Queens-Lake/?SearchTerms=Queens,lake