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I was thinking that, and somehow managed to bugger up actually typing it . . . me and tbone - "great minds think alike"? :-)

What runsongas said . . . there have been no changed in the Cyklon 2nd for the life of the regulator - they just released a plastic bodied variant. The "3950" refers more to the second stage, which has evolved over the lifespan of the Cyklon, but they are all cross compatible - just have your...

A clean flash should go in any direction- the device does not know what it used to be running . . . forward, backward, reload . . .it's all the same. - Tim

I am a size 14 going on 15, and with either 1/4" wet suit boots, or DUI rock boots, my Apollo Bios do fine, although a tad snug on the drysuit, but still comfortable. - Tim

When I did advanced rescue with NAUI, the standard was to establish a scene manager if enough qualified people were available, and then that person would supervise/drive the rescue activity, monitor what was going on, make sure resourced were called/brought in, manage bystanders, secure...

Noting that those are source efficiencies, and not the overall light . . . did a bit of searching, and it appears that HID has a lumens/watt rating of around 120 . . . . a data point notably absent on this chart, which appears to be pushing LED technology . . . - Tim

Let me add Poseidon to the list. Far from the cheapest, but regarded as one of the best on the planet. You don't see a lot of various countries navy's using them in preference to all others because they suck. Having said that, Poseidon regs are likely more than most divers need, and there is...

My first was a DUI TLS-350, full custom fit. I had attended the demo days event, and considering that I am a pretty large guy, even the stock size that I had tried on had to be ordered as a custom suit, so for the same $$$, I did the full custom. With the promo from the demo event, I got a...

The steels I bought last year are round bottom too . . . I think if you find a steel tank boot of the correct diameter, you will be fine . . . which should not be too hard. - Tim

I certed with PADI as OW in 1978, IIRC, and back then it was a very good program, and well worth the time and work. These days, I tend to agree with drbill - things have become way too simple to maintain a skillset that can deal with even minor issues underwater . . . Experience will get that...

You would be amazed how many people don't think they should have to and just don't . . . - Tim

*One* death means nothing, despite the big name . . . How many die on the roads every year? Aircraft accidents make the news simply because they are so uncommon (and the opposite for traffic fatalities). If I recall, the danger of death by shark attack is higher than that from flying . . . - Tim

Thanks for promoting yet another myth . . . . I think that you will find that flying light aircraft to be orders of magnitude safer than driving a car pretty much anywhere, and massively safer than diving (which I also regard as totally safe *unless* you are untrained or an idiot . . . ). About...

Myself, I am not tech, but everything I own is DIN. I also have a couple of adapters for my regs, as well as convertible valves on all my tanks, so I can "swing the other way" if needed. I can't see a reason to have to be exclusively one or the other, but do know what my personal preference...

Another very usefull drill is 8 or 10 divers in a circle. On signal from the leader, everyone takes their mask off and passes it to their right, and takes the one they get from the guy on the left, orients it, puts it on and clears it. You go around the circle until you get yours back, or a...

How was it? I did my drysuit cert this spring, and it was, if anything, a tad boring . . . everything was just intuitive and apparent. The pool work was first, and the main thing there was to get used to the suit, managing buoyancy, and getting upright if inverted (hold onto a milk crate full...

I have the same, I think . . . The manual just lists "Back mounted buoyancy compensator" and "Jacket buoyancy compensator" - no whiz bang model names . . . bought it in 2000 IIRC And I still love the thing . . . . and also am sad that DUI dropped the BC line . . . - Tim

The key difference is "young and stupid" vs. "aged and very likely experienced". Once has a chance of being quite competent, the other pretty much none . . . . Also, at that age, this guy may have learned to dive before certs were widely available . . . does that mean that he learned less...

I can't say that I have ever had a Sherwood, but I have two Cobras, and can't find a single thing to fault with them . . . They may not be the latest whiz-bang fancy dingle-berry loaded doohickey, but they do the job, and they do it damn well! - Tim

Read the maual - that is working as per design, since they don't have the ability to maintain deco status with a mode change . . . clearly in the manual, at least for the Cobra. 24 hours is to get to zero RNT at which time it's allowed. I think the Cobra manual may even mention what you did -...