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boulderjohn's Recent Activity

  1. boulderjohn replied to the thread How To Open The Tank Valve.

    I recently heard a long time PADI CD say that through the 1970's, all agencies firmly believed that everything you really needed to know...

    Nov 23, 2020 at 9:31 PM
  2. boulderjohn replied to the thread How To Open The Tank Valve.

    Not for many years--I don't remember when they ended it. Now, you CAN still do it. You are supposed to do an exercise of your choosing...

    Nov 23, 2020 at 5:48 PM
  3. boulderjohn replied to the thread How To Open The Tank Valve.

    And I was taught it by a PADI Course Director who had been himself taught it by a PADI Course Director, but it is nowhere taught...

    Nov 23, 2020 at 5:03 PM
  4. boulderjohn replied to the thread How To Open The Tank Valve.

    Just in general, in my years moving from DM to instructor and beyond, I realized that a whole lot of stuff being taught in OW classes...

    Nov 23, 2020 at 12:43 PM
  5. boulderjohn replied to the thread How To Open The Tank Valve.

    When I first became a DM assisting classes and later an instructor, this was standard instruction in our dive shop. I later learned that...

    Nov 23, 2020 at 12:28 PM
  6. boulderjohn replied to the thread Santa Rosa Blue Hole Cave.

    We were told it was 2 dump trucks, but we were told a lot of things that really weren't true. We saw maps of the cave that were not...

    Nov 22, 2020 at 10:18 PM
  7. boulderjohn replied to the thread Advanced penetration of the Spiegel Grove Wreck.

    I am no longer on staff, so I don't know why he was banned. It could have been for a post he made that as seen and deleted immediately...

    Nov 22, 2020 at 5:10 PM
  8. boulderjohn replied to the thread Santa Rosa Blue Hole Cave.

    I didn't even know it was there until now. I don't remember you telling me about vents on the SW wall, either. (I am old; it could be...

    Nov 22, 2020 at 11:41 AM