Come off it , Rod - you are trying to tell us that a manifold is more dangerous? You are looking at one failure mode, and ignoring all of the other combinations in diving that are equally important, and since we have had no manifold failures, more important. If you lose the knob, and the reg, you have to isolate, but you are saying this is more dangerous than just losing all of the gas out of one tank and swithing to the other ? First, you switch regs in either case (to be sure the other one is working so you do not come up empty, if not you partially shut don and go to a slow flow to the reg and get moving), then you go to shut off the bad reg. Either that works or there is no knob, so you isolate. Now you have lost some of both tanks, but at that point you are still better off, and to not have the flexibility of the manifold in order to accomodate a situation where TWO failures must occur together is a little extreme, espcially since if you TRY to drain you tanks through your regs it takes a while? Simplicity is having one pressure guage, one back up reg around your neck, one long hose which you breath, and one inflator hose. If you are breathing the stage and have to share gas, unclipping and passing the long hose while jumping to your own backup ( to avoid any possibility of having a second person out of gas - yourself) until the situation is stabilized is reflexive for a properly rigged diver, or a clusterfuck for a stroke with stuffed or no long hose, and a convoluted , multihose arrangement. Naked with the magic stone is best, and the closer you come to that, the easier it is. - G George M. Irvine III DIR WKPP Woodville Karst Plain Project 1400 SE 11 ST Ft Lauderdale, FL 33316 954-493-6655 FAX 6698 Email gmiiii@in*.co*
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