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Odd, I have met some people that say the exact same thing about carrying a pony! Their argument is that as long as you are carrying a second tank, a two first stages, and two or more second stages, you might as well add a manifold with an isolator and dive doubles. Now you have full redundancy...

Booth's rule #2, coined by skydiving pioneer Bill Booth, from Wikipedia's article on Risk Compensation.

I'm also a new diver using a hogarthian rig and DIR practices beaten into me by mentors. I've also heard the "technical" moniker applied to my rig and my habit of frog kicking by members of the PADI tribe. My small experience agrees with those who have pointed out the futility of getting into a...

Up here in Ontario, when you make a reservation all of the operations I've dealt with ask about your experience. They will not allow you to do certain dives without the appropriate experience. They will try to arrange a buddy for you, but they are clear that if you cannot hook up with an...

Your presumption begs the conclusion. Given choices A, B, and C you declare you are unwilling to choose "A" regardless of whether it can save your life or not and then you explain why B is better than C. Why not debate A, B, and C on their merits and then adjust your willingness appropriately?

I think it's quite possible to make decisions about whether to dive in this manner quite independently of consumption rate :-) For example, if the boat operator offered me an HP 130 and an AL40 as a pony, I think it would be quite easy for me to run, screaming and gibbering, from the situation...

One way to interpret these words is to take them as saying that the other people on the boat knew you were being reckless and by doing the dive with you they were tacitly taking responsibility for rescuing you if you went OOA. They were not entitled to "get steamed" because they knew you were...

Presuming they observed Water Monkey carrying an AL80 and a pony bottle on a dive to 165'+ and presuming they themselves were trained to dive to 165'+, I would normally assume they also knew exactly what they were getting into, especially as they were diving AL80s themselves. And if they hadn't...

I don't normally judge other people by my own standards. I have not been trained to dive to 165' in any configuration using any gas, so no dive on that wreck is within my limits. Do you really mean to use the word "reckless?" I understand it to mean marked by defiant disregard for danger or...

So... Would you say that diving to 165' or more on a single eighty is "within your limits?" Just ot of curiosity, did you dive as part of a team, and if so, were they also diving eighties?

And we know that it is ridiculous to plan for two fatal diver errors on the same dive. Running out of air twice on the same dive requires the diver to (a) make the mistake of running out of air, while simultaneously (b) making the mistake of depending on a SpareAir for redundancy. Seriously...

I'm booked with Blue Angel from the 3rd through 6th. I am probably going to extend my stay at the resort and yeah, I'm into doing more dives presuming you don't have to rescue me too many times :-) I've done the ruins a few times but it's not like you can see everything in a single lifetime...

Look around for Ratio Deco. There's various explanations of it online that you can read for free. If you want a fuller explanation, you can take technical dive training from either of two agencies: GUE or UTD. UTD actually offers an online Ratio Deco class, although obviously an online class...

I am not trained in the black arts of deco theory and science. But the little research I have done suggests that ad hoc remedies like this may be more dangerous than helpful. There are a lot of factors behind the choice of a deco gas and deco plan, and it is difficult to evaluate a single piece...

The Narcissism of small differences. That is all.

Slightly off-topic--sorry--but may I ask, why do you want a spare air or pony?

Staying at Blue Angel January 3, 4, 5, 6, 7, No plans yet for January 8, 9, 10. Diving Blue Angel January 3, 4, 5, 6, no plans yet for January 7, 8, 9, 10. Returning January 11. FWIW, another SB member and I have booked the Twilight/Night dive with Blue Angel for the 3rd. My plane is wheels...

I don't have enough experience to tell you that this is a dangerous idea. But looking at some of the other responses here, I would certainly think long and hard before using a bottle to take a few breaths of compressed air during a "free" dive to extend your bottom time. Think of things this...

I wonder if we're talking about the same thing? I was explaining that I was not taught to do 90' dives without a buddy, and using being out of gas at 90' while the entire group has its back to me as an example of what I'd prefer to avoid. That's not the same thing as handling a situation...

Hee hee, well, as a contingency, of course you do what you have to do to get gas from whomever is within eye contact and/or OOG swimming range. Naturally. But no, my training as given is to have my assigned buddy be the dive in question and to plan the dive and dive the plan such that I am not...