Yep, I'd go in it again, last time I lost my board and had to body drag the last 3 or 4 km's, so I can only do better next time.
The course using all the marks is about 28km's (I think) as the windsurfers. Do Last time we just went around two marks which is a lot shorter. One mark is straight out from Ledge and one out from Lancelin.
It's a lot of fun and as always the Miss Flying Objects comp and the party at the pub is well worthwile.
I was lucky enough to get a ride in a chopper last year so check out the windsurfing footage on you tubes, the leaders took about 30 minutes, pretty quick.