extending a recreational dive into short deco?

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I see @Bigeclipse Yes, missed deco can be just as deadly as not being able to make it to the surface in a cave. If you deny that, then you are a truly special individual.
Rather than qttacking me personally, why do you not take the point that the two situations are not alike? Have a problem in a cave that leaves you without gas and you certainly die. Have that problem in open water with a deco ceiling and it depends. With the short obligation that the op is suggesting it is quite likely that picking a different algorithm would make a bigger difference. Not understanding the relative risks of activities leads to poor decision making. Poor decision making leads to poor outcomes. Scaring people by suggesting that a little bit bent is like a little bit stuck in a cave with no gas is unhelpful.
 
Being OOG or low on gas in a cave with a long swim ahead of you is one of the most terrifying things that can ever happen to a diver.

Being OOG and having to skip deco - is also bad but the chances of survival are greater.

One is not equal to the other. That's not how risk analysis works.

Hard ceiling vs Soft ceiling.
 
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Rather than qttacking me personally, why do you not take the point that the two situations are not alike? Have a problem in a cave that leaves you without gas and you certainly die. Have that problem in open water with a deco ceiling and it depends. With the short obligation that the op is suggesting it is quite likely that picking a different algorithm would make a bigger difference. Not understanding the relative risks of activities leads to poor decision making. Poor decision making leads to poor outcomes. Scaring people by suggesting that a little bit bent is like a little bit stuck in a cave with no gas is unhelpful.

And yet, you STILL, miss the point. You are the only person that has made the comparison of 5min deco to 5min from a cave entrance. Therefore the point is lost on you and I am ok with that. If you feel like you were personally attacked my deepest apologies and we will simply move on.
 
And yet, you STILL, miss the point. You are the only person that has made the comparison of 5min deco to 5min from a cave entrance. Therefore the point is lost on you and I am ok with that. If you feel like you were personally attacked my deepest apologies and we will simply move on.

I'm not sure what the point is either, but when you say this:

"Yes, missed deco can be just as deadly as not being able to make it to the surface in a cave. If you deny that, then you are a truly special individual"

It's pretty much of a personal attack.

Not sure what your background is, but equating five minutes of missed deco with OOG in a cave as similar risks doesn't seem correct to me. By that logic, driving to the dive site can be just as deadly as cave diving, since you can get killed doing either of those things.

 
Not sure what your background is, but equating five minutes of missed deco with OOG in a cave as similar risks doesn't seem correct to me. By that logic, driving to the dive site can be just as deadly as cave diving, since you can get killed doing either of those things.

Never once equated 5min of missed deco to running out of gas in a cave. And, I stand by you statement that you quoted on missing deco and I already apologized for the "truly special" comment.
 
All,
I hope this isn't a stupid question and maybe I will learn it in my Deco procedures class (I am currently enrolled in Intro to Tec for TDI), but I was wondering if any of you ever extend a recreational dive into some short deco. For example, lets say you are with a 2 buddies who are only recreational divers. You plan a dive to 100ft. Lets say your NDL time is somewhere between 16-20 min on air depending on your computer. Your buddies are wearing 100s but you are wearing your doubles (for whatever reason). Now lets say we all will follow 20min as our NDL time. It approaches 20 minutes so your buddies want to ascend but you found something interesting. So you tell them to ascend without you. You have plenty of air because you are wearing doubles. So have any of you hung around a few extra minutes maybe racking up a few minutes of deco?
Yes. Because I have a 22L/double AL80 twinset, a 5.5L/AL40 deco bottle of O2, have told buddies, and cleared with boat crew & captain beforehand, that I might electively extend my dive runtime to an hour max total with a deco profile coming up the anchorline.

Along with the caveats & advice posted already in this thread, the point here is if I choose or anticipate going into mandatory deco -no matter how short it might be- and have Advanced Nitrox/Deco Procedures (ANDP) Cert, I will have an appropriate deco gas & profile planned out in advance that should agree with my dive computer's calculated deco schedule realtime during the dive. I don't like to deco out on Air backgas only, especially if planning to do repetitive dives like this on a liveaboard over a three-day weekend. . .
 
I consider myself mainly a recreational diver. I dive solo, most of my dives are drift. About 5% of my dives include light deco, <15 minutes. I have the redundant gas supply to deal with this obligation. I'm quite comfortable with my dive profiles.
 
I apologize to everyone above. I will NOT be suddenly doing deco dives.

I should have started with that. I am currently training for intro to tech . . . .

Intro to tech--and I'm not referring specifically to the TDI course of that name, which I haven't taken, but rather the concept of learning the rudiments of what goes into diving beyond rec limits--should be as much about the mental aspect/mindset of tech diving as the mechanics. I've been slowly heading down this path myself and absorbing this aspect little by little. Take it slow. One can probably learn the mechanics of it pretty fast, but maybe the mental aspect/mindset/philosophy/Zen, etc., takes time to sink in.
 
http://cavediveflorida.com/Rum_House.htm

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