The beach between Lancelin and Wedge is still pretty soft at the moment (as of a week ago), so unless you're driving a monster-truck you'll have to take the inland road, which is a pain in the ass. If you've never driven the tracks North of Lancelin before I recommend using some kind of a map, whether it be paper or electronic - it can get a bit like a labyrinth out there, and that 40min drive could easily turn into a couple of hours

Oh and, of course, the smell of rotting weed at Wedge gets on the nose a bit, but it is a great kiting spot. At the moment the south point at Lancelin is still pretty good - there weren't too many people there last weekend and it was a top 9m day. Now with DST, it doesn't get much better.
Thanks to the wonder of technology, google earth/maps can show many great spots. There is good resolution over most of the WA coast so all you need is a 4WD to find your very own "secret spot".
Sk