While I enjoyed watching Sea Hunt as a teenage diver, we also looked at it and said, "he switched tanks mid-dive," or "Mike's using a different regulator now," or "his J-reserve is down now," or "he's cutting the wrong hose." (Mike Nelson regularly cut the exhaust hose, which did not cut off the air supply to the diver, only made it free flow and run out faster.) When I went through the U.S. Naval School for Underwater Swimmers in 1967 (which, by the way, was a three-week course in scuba diving), they regularly berated the show, saying "Don't put your face mask up on your forehead like Mike Nelson, or you'll face 50 pushups." If you'll look at the photo below, you will see that the trainees are exiting the water with their masks on their face, mouthpiece in their mouth, and next to their buddy (this was after a 1500 yard underwater compass swim). If you didn't do that, and got separated from your buddy, you carried a six-inch thick, ten foot plus "buddy line" for the next 24 hours.
I don't see a vintage diving course going to these extremes, but incorporating the NAUI course outline from the early 1970s would be appropriate, as well as the use of double hose regulators, dive tables.
I do use a dive computer, as I find that they are very helpful in documenting my dives. You can see the graph of one of my dives below, so I would incorporate the newer technology, but keep the tables as a reference. But you need to be wary, as sometimes the computer is wrong; in this case, the dive represented in the graph was about 30 minutes long, whereas the computer graph on air consumption shows only 8 minutes. The water temperature was also in the 50s F, and not 32 degrees. So while the profile is nice, be aware of the problems and teach about them too. This is also why it may be important to teach the tables, as with a watch and tables for backup, you can determine when the computer is malfunctioning. (The readout of the computer real-time was fine; the printout was not.)
SeaRat