Have a look at the AWA website:
windsurfing.org/insurance.htm
This is the insurance you get when joining an AWA affiliated club.
- Illawarra Yacht Club Ltd (NSW)
- Marmong Point Sailing Club Inc (NSW)
- Merimbula Sailboard Club (NSW)
- Middle Harbour 16ft Skiff Sailing Club (NSW)
- NSW Wavesailing Association Inc (NSW)
- St George Sailing Club Ltd (NSW)
- Stormriders Windsurfing Club Inc (NSW)
- Windsurfer Class Assoc. of Australia (NSW)
The webpage says that Ian Fox is the expert, so you could email him via the link on the right side of the page if you need more information.