Being one of the beginner plebs on the circuit I tend to find all good when up and planing then it's pretty easy, once setup the equipment is well balanced and the wind range you can sail in is amazing (especially through the lulls). Were you can get punished is from bad technique when tacking and gybing, it can get pretty physical hauling that big sail about especially it falls in the water. I joined in the racing to improve my technique, I am having to re-think everything, it is taking a bit of time (could be because I'm an old fart) and I am beginning to see some gains now.
I do have confession in that I do like cross the the dark side (I sail lasers too

). I have to say that tactics are critical to both disciplines. For windsurfing its just a different slant from one design sailing with the priorities being biased towards keeping speed, hitting those lay lines accurate to reduce the number of tacks/gybes. One thing I do find annoying about most other one design sailors is their lack of knowledge, they still think that windsurfing is all about how much you can pump around the course!
I have to say the really good thing that NSW circuit is the FE+ series for the beginners. We all start at the same time, just do one less lap. It means that you do get a result and can spot the improvement's by moving up the result sheet.
As Chris says, get yer arse in gear and give it go! Easter weekend we will be up at Hawks Nest.
Peter