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Jim, First you have to admit to the fact that people dive singles. Always have , always will. They don't want or need to dive doubles. They use a pony (30 or 40) as a completely redundant air source, not as "extra air", strictly emergency use. Is there a problem with this? Sounds to me like a good plan for people who dive singles, in fact, you will see on many boat schedules up here, that ponies are required for single tank divers. To suggest that a single with a y valve is a better setup is absurd. Where is the redundant air source? To suggest that making a free ascent is the proper method of extraction from a bad situation, instead of switching to a pony is absurd. To suggest that because thousands of divers do dives on single 80's and live, means it is the better setup is absurd. Not everyone wants to or can dive doubles, not everyone is an accomplished diver, who in a single breath can extract themselves calmly from a bad situation, and do a free ascent from 100 ft. To suggest to people that they should discard a viable piece of life support safety equipment, in exchage for the macho, I'll save myself in any situation because I am super diver attitude is irresponsible. I hear a lot of "you should be able to, or you shouldn't be diving " mentioned on this list, but the fact is not everyone can do everything perfectly everytime, and to put your life in the hands of this attitude is an accident waiting to happen. -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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