Well this thought isn't original with me BUT: Why do you think that Dr. Benjamin and crew went to the time and expense to develop the manifold? Anyone who can't close their isolation valve in less than 5 seconds just might want to reconsider their hobbies. And third, NO I don't have to loosen my crotch strap to turn off any of my valves. And I'm just a guppy cave diver who takes a LONG time to scooter to the Hinkle :) Isn't that a beautiful cave? safe diving r.b.
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