Have a chat with the crew at Windsurfing WA.
they should be able to help out with someone who can give some gear a demo.
Get down to the slalom racing at safety bay and chat with the crew down there.
Jesper Orth at Simmer Style WA in O'Connor may be able to demo you some gear as well.
www.windsurfingwa.org.au/simmerstyle.com.au/pages/demo