I was there for 10 days kiting holiday in 2009.
Everything about kiteboarding was quite experimental at that time, since there were only a french guy running a school with very old windsurf equipment and no kite equipment: he teached 2 guys with their own equipment
For what I know, now there are some spanish guys from Tarifa (Art Of Surfing shop owner) who organize kite holidays and boat tours for kiting...
We had good steady wind every day and as we were some of the first kiteboarders, we changed location every day to explore the potential of the place, but I have not seen any good wave.
Only occasional very small waves near the windsurf school and obviously I guess there are waves on the outer reef but it's open ocean swell hitting a coral reef, not exactly a safe spot to test...
We were at http://www.posadamovida.com/index.php
maybe you can even ask them some more infos