I may look around a bit. I suspect that there are quite a few more sand bars like this in the Bahamas. I've even seen some similar from the air in the Gulf north of Tampa towards the state line.
If you visit Delray, swing by Delray Watersports and talk to Greg. He worked on the island for a while and even came into some kiting gear there. Greg is the victim in
http://fksa.org/showthread.php?t=4119
Branson might be interested as he kites, not sure about D. Copperfield. They're out there ...