Hi cudachaser
With reference to your comments "how many of us are instructors" I was a registered instructor for several diving agencies but have recently resigned from all of them as the standard of instructorship is appalling and one of the agencies seems to be pursuing the notion that every body should be an instructor if you pay the going rate. Open water to instructor in less than a year who are they kidding. I'll keep to my scuba technician job/passtime and dive with buddies who are as experienced as me. Les