Sounds awesome and a big thumbs up for the guys at GWC for taking this on.

Just to clarify about membership and entry.
Members of GWC, WWA, SBWC will be able to enter on the day but it really helps with organisation if you can at least register your interest here or on windsurfingwa.org.au (log in first) for WWA members.
You will not be able to become a member on the day. You can join via windsurfingwa.org.au straight away with a ccard or paypal account or download the membership form and EFT a payment or contact the GWC guys and join them.
You need to have joined by March 8th end of day or you will not be able to take part.
This has to be the situation otherwise our insurance for the event is not valid. Thanks for your cooperation with this. Please do not ask to join on the day.