But I do have a problem with the type of harassment Trace has proposed. It isn't necessary. This whole "come up behind the diver and turn off their valve" is nonsense. There are many other ways to teach this skill. If it's even necessary. How in the world could a jammed open valve turn itself off? In a recreational context now, I'm not talking about cave diving. And I'm not buying "the kelp did it!".
My girlfriend who was a PADI DM before becoming a PDIC instructor, witnessed 3 valve roll-offs in OW classes at Dutch Springs while divemastering because students rubbed knobs on the ascent lines. Kelp might not do it, but anchor lines can. Divers enter the water without their air turned on. This is the best reason to state that a valve drill is necessary.
When did I say that I come up behind a student and turn the student's air off?
I do not advocate instructors shutting off a student's air.
I only advocate that in tech or cave class in critical skills training in shallow water to test the student's ability in an air share to check for a left post roll-off if he is out of gas during a donation. I will never do that to a tech student inside a wreck or cave or in deep water.
In a previous post, I said that the student should be able to perform a valve drill. These are the steps for a single tank valve drill:
1) Student gets the attention of his buddy to act as a lifeguard.
2) Student signals buddy, "YOU WATCH ME - VALVE DRILL - OKAY?"
3) Upon receiving the okay from the buddy acting as a lifeguard, the student tests his back-up regulator, shuts off his OWN air, breathes the regulator down, then turns his air back on.
4) Student then checks both primary and back-up regulators, locates his SPG, performs a flow check, and signals his buddy that he is okay.
Air gunning could be added in a situation to teach the student to differentiate between a fixable and non-fixable failure. Small bubbles directed by the air gun to a low pressure hose may get the student's attention. The student can signal his buddy to look for bubbles. The buddy checks, sees that an LP inflator hose is leaking, mimics fixing the problem and the air gunning ceases. In the same situation, a fast stream of bubbles may be directed at the tank O-ring. The student hears the problem, signals the buddy to check, and the buddy determines that the tank O-ring is leaking and to abort the dive. They begin to swim home with the buddy prepared for an out of air situation. The gunning stops, as if the tank is empty, and the student with the failure is told that he is out of air. The team begins to share air and swim home. This scenario creates both understanding of the working relationship between the tank, first stage, LP and SPG hoses, regs and BCD. The student is able to gain experience hearing the difference between types of leaks and the buddy team can work together to diagnose and fix or manage the problems. This might not be necessary, but the students actually enjoy trying to figure out what is wrong and learning about their regulators.
Yes, I realize Trace didn't actually include the description for this particular drill. As you point out, I am just imagining[/B] because even he admitted the length of the actual harassment list was much more extensive than posted.
We will disagree about the quality of Trace's program. I wouldn't come within 100 miles of it and I sure wouldn't recommend PDIC to anyone. There's only a certain demographic that will put up with that kind of thing and I'm not in it.
Richard, I'm beginning to find you to be personally insulting.
You know little, yet
ASSUME a lot. You condemn me, the quality of my training, and that of my agency having
ABSOLUTELY NO EXPERIENCE with any of these.
Your experience is, as you admit -
IMAGINED.
My point is that what Trace describes resembles in large measure the kinds of things the military would do. Now, I haven't taken a military dive course but I have no doubt that it includes huge helpings of harassment. Everything else in the military does. Except the firing range - how odd. I have fond memories of the firing range.
You mean what you
IMAGINE that I describe resembles the only experience you've ever had with what you
IMAGINE it to be like which is the military. My friend "Schlitz" was an Army diver. He's a PADI instructor. Ask him if my classes are anything like his experience in the Army diving program.
It's okay to disagree about philosophy, but
IT IS NOT OKAY to disparage the quality of my training when
YOU CAN ONLY IMAGINE IT.