Colin,
These days knowledge of the wheel is a prerequisite for DM.
R..
Yeah, I know! I was surprised to hear about an instructor so out of date, nprofessional, and irresponsible that he acted like he did with Snowbear. If Snowbear had said IDC I would have really been blown over. (The possibility existed that he might have become a divemaster a while back before the whell prerequisite. I don't know when it became mandatory to teach it for DM, though.)
Of course, my personal feelings about the wheel are immaterial...Still gotta teach and learn it..
Thanks,
Colin Berry