Also many years ago I attended a class leading to certification as an instructor for the disabled. Unfortunately logistics prevented me from completing the course. I don't know if there's a substantial "hidden" demand, but I've never so far in Belize found anyone asking for it, so I've never taken up that course again. I do know Ramon's have worked with quads in the past - perhaps Elbert knows something about it, or you could ask Rick (runs the dive center, doesn't read this board).