I am treasurer at LCSC and I look after the membership applications. You can download an application form from the club website.
lcsc.org.au/membership/most clubs will have a simillar arrangement. You can send me a private message if you need more information.
As I pointed out earlier, the silver cards for next season are not available until the 1st of August. You can join now but your card will be valid only until the end of September.
I would invite all those who are interested in course racing to come to the Windsurfing Queensland AGM which will be set shortly and discuss a plan.
I will start a separate thread on this subject.