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The discussion last week, reminded me of talks I had with my cave instructor on how to mark deco regulators for use in possible low vis situations. For what it is worth: The bottom foot of some panty hose attached with a rubber band over your O2 second stage. 1) This will keep floaties from hiding inside. (i.e. the orange grove entrance to the Peacock system) 2) In a total silt out, narced, and disoriented it is still easy to tell you just put the wrong reg. in your mouth. 3) If things are going crazy (i.e. bad/wrong) and you don't have time or hands to remove this covering, you can just bite down and breath through it until things calm down. 4) After the dive it can be used to hide those water logged toes. ;-) If the feel doesn't bother you, the use of the deep bite (whats the real name?) long mouthpieces on the nitrox regs will again give you a tactile way to tell if you are breathing a shallow gas. IMHO: If you have trouble switching onto the bottom mix it is a good indication the dive should abort. So I just worry about tactile marking those gases I don't want to use deep by mistake, and use color coding for the others. John jskrovan@va*.mi*.co*
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