jepuskar:What is wrong with doing 84 quarry dives and 16 ocean dives? Are you trying to imply that people who have more dives in the ocean are better divers or would make better instructors?
If you've been diving in many different conditions, you're likely to have encountered more different problems and acquired more diverse experiences, than if you have done all your diving in your backyard mudhole.
However to me, it's not the ratio between quarry and ocean dives that worries me. It's the fact that 84+16 = Instructor....