First of all, Lady-Diver - I haven't realized I've been away for so long! It was due to end of term in univercity, which means a test period (and dont ask how it went....

A true diver is too lazy to study properly!!!). I am quite ok, I wasn't called for service but a lot of my friends were, and that's about it. I did browse the site once or twice but didnt have the time for more than that.
and now, to the matter of the message- Someone asked if those exercizes are alowed by agencys, and I willdo my best to answer-
First of all, in TIDF (the israely diving federation) mask snatching and tank closing is a part of regular training (or at least was- I dont really know what's going on with them these days, this organization is falling apart). They had also several other exercizes. From this it is posibble to conclude that CMAS also does it, as TIDF is (actualy was) a part of CMAS.
Now, for the bigger organizations-
PADI is the organization that stands for the least amount of freedom for the individual instructor. With PADI an instructor dives in very grey waters with those exercizes, and may not recive backup from the organization if something happens.
SSI does alow and incourage instructors to add their own exercizes (the 80/20 method, to whom it says something). Will they stand by an instructor if something goes wrong during an exercize such as the one discussed?
I don't know. It's grey water here also, but somewhat brihter than PADI's.
As fr NAUI-I dont really know, but I guess thatn this matter they are more like SSI than PADI.
Now as for myself- I did use some "Extra chalenging" exercisez when tought courses, but nothing like the one described in the start (well-we didnt really have the right facilities

). I'll tell you about one such exercise- in eilat there's a beach that a lot of dive-centers use to teach, which is called Aqua-sport beach (after the diving center that is on the beach). It's a great beach to teach, that looks like it was made for it- a steady slope up to 3 meters deep for shalow practicing, than a steep one up to 20M and another steep up to 30M. Add to it the visibility of a swiming pool and you get a geat teaching place. Anyway- I'm drifting away- in the waters, at the shalow part there's a concrete sewege tube, about a meter wide, 6M long, that goes from about 3M deep to 3.5M deep (a very moderate slope). first thing with it-is just trying to swim through it without touching the tube- a great bouyancy exercize!!!!
now- After a few dives at the area in which the students went through the tube for at least a couple of time we go there, and as usual, I'd go in the tube, and than one by one the students will. this time instead of waitng on the other side, I wait on top of the tube, where the students can't see me. Now the fun begins- a student comes and I "mollest" him,when he can't expect it. I can close a tank, than come to front let the student see me, while he still has air and watch how he deals when air stops,. than he sits down and I wait for the next one and so on. Lot's of fun!!!
Actualy- Whenever I teach a skill I like to test it right away- even in the first pool-scuba, while students stand on their knees, in very shalow waters, I snatch masks and watch how they deal with it, will they take their head out of the water or just put the mask on again, and smile at me afterwards. This gives me a very good perspective of what kind of students I am to handle.
Well, that's about it. As usual, I got carried away and write about stuff I didnt intend to, but that's me
