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I am shocked that turning off O2 for a nonemergency event is a taught procedure, especially on a mccr. This concept is completely alien to me. If I were to go CCR and was taught that I don't think I could do it. Regarding 32%, that is more of a poor BO/dil choice. Not wrong, but inefficient...

I would recommend 3 arrows and a minimum of 6 cookies, but 8-12 cookies is preferred. A couple of jumps, some Ts, you will be surprised how quickly the cookies get eaten up on a dive.

I actually think your problem is reversed. You have done plenty about conservation and appreciation of the cave and not enough about training to make sure it becomes a reality. You think people actively want to damage the cave? Cave will be disturbed because people go there, that's a fact of...

The snarky answer is I don't think the CDS is responsible for the any of the good or the bad divers that go into caves with NSS-CDS cert cards. I don't know any CDS instructors that only teach for the NSS-CDS, therefore it is hard to lay blame (or credit). The issues with the Apprentice Program...

Thank you for posting this; it clears up a lot of confusion. Was there no discussion on the board about how this creates an entire managerie of certification cards-all with the same name, but with COMPLETELY different rules? My opinion is if you wanted to do a "Plus Class" You make it 1...

This is essentially what needs to be done except there are two problems. 1. The board of the CDS operates with staggered terms so it's not possible to create that ground swell of new board members unless sitting members resign mid-term 2. Culture-- I don't know the make up of the CDS board or...

Showing payment receipt email/welcome letter usually worked or some kind of membership email/form with an expiration date. It's usually not super complicated, but YOU will be responsible for providing the information, there is no database the dive shop can look at.

I think that is exactly the point. There is no difference between NSS-CDS and TDI, IANTD, therefore, why should you be paying an annual fee every year? Tom is speaking a lot of uncomfortable truths. The fact that someone as experienced and in the know as Jim Wyatt could only provide a couple...

To be fair, I think he is referring to saying 'I know I am exactly X into this cave'..Not a guestimate based on time/swim speed or measuring distance on a map and saying this jump is X from the door. In Florida you can find exactly how far into a system you swam. In Mexico, it's a more of a...

Intentional or not it is a technique for lower gas consumption. Slow and steady breaths and slow, steady, and controlled exhales. It isn't the lack of oxygen that causes a person to want to breathe, it is the build up of CO2. By exhaling half (or whatever feels natural) you are expelling enough...

There is no requirement, but side glad is generally not recommended for backmount in a cave environment. While it is 'usable', when a side glad is utilized in a backmount configuration I have seen those extra couple inches cause the cord to drag much more in the clay and mud and the extra slack...

Reading this is looks like hroark is correct. I can't think of anyone that has an intro to cave CCR course. CCR Cave Diver - NSS-CDS Training Program The suggestion of taking intro to cave in OC and then doing Full Cave on CCR makes sense on paper and has benefits, but it seems...

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It depends on the profile and exact nature of the dive, but if an OC diver is diving very close to MOD on a mix then they are essentially mirroring the CC diver on the bottom portion of the dive who is running 1.2-ish. On Deco, the OC has the benefit of maxing out PO2s, especially the 1.6 at...

You face the the same dilemma that a lot of divers face--when do I go CCR, do I climb the top of the OC pyramid first, etc? On top of that you have been exposed to GUE and recognize the quality of the training and the course progression--which adds another layer. PfcAJ has always been a very big...

Did I miss a memo? Since when does Rec 2 allow one to take Tech 1?

Ken has some photos from a previous thread Just ordered my FATHOM! Golem Gear, Inc. - LOLA Universal DIN Valve

I am not 100% familiar with the set up, what selective leaking of helium?