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Jim > >The diver in question had several problems, only one of which was the new >and unfamiliar gear configuration. The way Zak phrased his message he >inferred that there is a "TDI doubles patch" you need to get to get >before you can buy doubles. I did not read it that way , but no matter he may still need help which is my point. > >There are definitely divers who benefit from hands-on instruction on >advanced techniques, and I won't argue with that. But if you take a >single 95 and set it next to a set of twin 45's, there really is not much >of a difference except the twins will feel nicer on your back and more >balanced underwater, plus will give you true redundancy should you feel >you need it. And I will maintain that a small set of doubles are easier >to manage than a single w/pony. What good is redundancy if you do not know how to operate the manifold , I have seen newbie doubles divers close all three valves , and think that you are suppose to do it . That can lead to some problems . I even this year had to open the isolator valve for a diver on the bottom , he had closed it and could not reach it during the dive . You were there! > >You can be a bad diver with a single or doubles. The only reason I >recommend a single to a new diver is for he or she to get used to air >mgmt. skills by limiting the air supply. If you feel you need to use a >pony for your type of diving, a small set of doubles is the better way to >go. You have been intent on pulling me in on this from the start , so here is my 2 cents on that. The pony bottle that a recreational diver carries is not for himself as part of air mgmt. or to extend his dives , but is for his buddy who will sooner or later need it.Another reason is his gauge may get stuck and lead him to believe he has more air then he does , you saw that happen this summer , that was on a tech dive , but it could happen on any dive .The diver was highly skilled and noticed the malfunction rite away , I do not believe a rec. diver could be that lucky some might but not all. A free ascent from any depth is not good , panic because of sudden lost air ( and I don't mean low , but out ) may cause a diver to hold his breath , need I say more .Okay Jim happy now , did I step on my dxxx anywhere here ? Capt.JT > > Jim > >Sender: Capt JT Date: 1/27/99 9:19 PM > >>Jim >>You are wrong with this advise , just remember this summer when you sent me >>a newbie w/ doubles rigged DIR , you do not do this unsupervised , that >>diver was in over his head in gear he may in time be ready for it , but he >>must first be shown what to do with it . Not everyone progresses as easily >>and fast has you did , some need real help . You can not learn to dive on >>this list , sooner or later you must get in the water . Things become very >>different then , you can not open a book or go to web site to save your ass >>. You are very smart , you have been on the boat and seen divers that >>should not be in doubles.This guy may be one how do know he is ready , he >>could hurt himself or someone else .Stop and think about what you know and >>have seen , you will know I'm right. >> >>Capt.JT >> >>At 08:33 PM 1/27/99 -0500, you wrote: >>>Zak, you don't need an instructor to use doubles. You buy them, put them >>>on and jump in. There. Consider yourself certified. >>> >>> Jim >>> >>>Sender: Zak Winship Date: 1/27/99 8:56 AM >>> >>>>I haven't >>>>been able to upgrade to doubles yet (There seems to be a lack of >>>>teck instructors in Maine) >>> >>> >>> ------------------------------------------------------------------- >>> Learn About Trimix at http://www.cisatlantic.com/trimix/trimix.html >>> >>> >>>-- >>>Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. >>>Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. >>> >> >> > > > ------------------------------------------------------------------- > Learn About Trimix at http://www.cisatlantic.com/trimix/trimix.html > > >-- >Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. >Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. > -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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