And, while I'm sure you don't want to hear this, you are probably not a fully qualified kids windsurfing instructor.
no offence, but a surfer is a surfer and can teach another. I mean, my dad taught me all i know. I've never taken any lessons, i've jsut observed, read, and thought. Half of what i know, i know because i enjoy mechanics a lot and the other part is experience. I'm not saying i'm a really good surfer now, though i've been at it for 2.5 years now. But i'm sure i'm no worse than most.