I was there a few years ago in August. Mike Walker was there giving lessons for Jen from Zephyr. Three girls from Perth went from raw beginner to competent in a week despite consuming copious quantities of alcohol each night.

The lagoon is shallow and the wind is very consistant. You can stand up in waist deep water anywhere. Only thing is that the sand is coral based so any cut or scratch needs immediate attention and your knees will take some punishment in the shallows while you're learning. Definitely take booties, they are a must as Jen will tell you. No one kites Cocos without them - too much coral.