Jacko gave it a bad report when he was there in December. Based on that, I didn't bother going this year. More info in the link below. A few interstaters did their annual late summer pilgrimage there. You could probably ask them in the post below.
www.seabreeze.com.au/forums/Windsurfing/Gps/SA-rain?page=1#lastpost
Probably not a good time to go there at the moment, with the doldrums around the corner, and the fuel situation IMO.