On the southern Pacific coast of Mexico is Salina Cruz. About 2 hour drive south of Puerto Escondido (Surf Capital of Mexico). We windsurfed there years ago in the bay and it was fantastic. The area is a little remote, but all the trees grow at a 45 degree angle and trucks get blown off the road. The beach and bay are beautiful and prestine. Lots of salt flats in the area. Have not kited there yet. It could be the next great undiscovered stop for kiting.
Tom
http://www.cozumeltom.com