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I just want to say that I am very happy with the level and quality of the discussion that has taken place so far. I understand that CE testing is expensive and the "one and only one" configuration on the certificate is somewhat limited. I realize the value of CE testing, but I also do not use...

Thank you for this. I understand if you are hesitant (or not allowed) to speak about it in depth. You are an instructor on several units, including the XCCR. Over the years, several posters including myself have commented how they enjoyed demoing the XCCR, but the price scared them away. I...

I am not a CCR diver nor do I have experience with the Liberty, but from my understanding the steps needed to confirm a voting logic failure would be the same no matter which unit you chose--or else how would you know which sensor to manually change with the Liberty? In either case, once you...

Agreed.

Hi, I usually don't like when discussions get closed or blocked, but can you please stop responding to him. It's a ten year old case and there is no evidence to support one side or the other. Let's just agree to drop this particular part of the discussion.

Perhaps additional detail with the titanium could have been added-I thought I had covered it and mentioned the T series when I was listing out the other Atomic series, but I can see from my post I did not. The S series should be fine because all the titanium parts are in the 2nd stage. Point...

To answer the original question. Every new regulator bought today is O2 clean-even ones that state 'only use up to 40%'. The M1 is made from a unique compound (Monel) that allows them to claim to be able to use up to 80%. This is primarily a marketing gimmick. I would have no hesitation in...

This is a fair response. Although, I will point out that you aren't attacking an entire military branch because of one idiot instructor. You can go back and nearly all the GUE recommendation threads have the caveat about personality clash and still needing to speak with and gel with your...

It may not sound like it, but these suggestions sound a little advanced for some intro student--Depends on the instructor, depends on the student, but these are not things I would suggest unsolicited to the cookie cutter intro diver. I understand your thoughts on taking your time to exit, but it...

Dean Marshall hasn't been a GUE instructor in years, at this point it might be over a decade as I can't seem to find any activity after 2009. I am sorry you had a bad class, but this is not the first time you have brought this example up in discussion. You are not the first student to have a bad...

They sorta do. It's the 200' defender spool and comes with a handle attachment. Defender Pro 200 Reel

At some point the risks become too great and humans begin to essentially chase 1s and 0s on a computer screen. What they should do is treat any depth greater than 300 meters (1000ft) like 'Outer Space'. There is going to a planet/moon and then there is just going into Space; it doesn't matter...

Some people are angry drunks and some are super mellow drunks. Going too fast and going too slow are caused by the same thing-your mind has gone blank and you've stopped thinking.

The GUE protocol has near zero risk of every being the wrong gas. The tank markings and contents are verified three times--visually, by pressure, and by buddy in a 7-8 step process that can be efficiently executed in 35 seconds on a slow day. It is difficult to state anything as 100% idiot...

That is a little unfair. I do normally see a more even progression of added complexity--from 1 bottle to 2 bottles to 3+ bottles. If not through cert cards then through continued diving experience and adding the bottles themselves gradually. I don't know what Stuart has been up to, but I know he...

Switching to back gas in between the deco switches is absolutely the way to go. Switch from Deco-->backgas-->clean up used deco bottle--->switch to new deco bottle. Keeps everything clean and controlled. No dangling regs to get get in the way, no picking up the wrong regulator, etc. The...

A little bit of a pile on going on. Anyone who has been on this board for a reasonable amount of time knows Stuart likes his gas mixes exotic --Steel plate matters. With that many tanks, go aluminum or carbon fiber --Yes helium content will affect things --Yes, the left side and leash combo all...

Steven Slater-English wreck diver. Steve was diving CCR and near the end of his first dive on the Andria Doria when his inflator stuck open and he shot to the surface from 240'. His buddy witnessed it and was unable to assist.

Really depends, returning student to same instructor, I would say 70% chance it's free. There can be a lot of flexibility with upgrade students. Because it is essentially an evaluation dive, they can be incorporated and squeezed into an instructors currently scheduled classes. If it is a Rec...

A student who has a rec pass may take a tech upgrade from any GUE instructor. Usually a student who has a provisional pass will go back to the same instructor. The provision student going to a different GUE instructor for their upgrade is less common, it's allowed but there might it might...