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If you understand the logic of diving half +200 psi on stages, you'll understand that the point is to use them up as much as possible on the way into the cave (and out for that matter). Then you factor that usage in and use less on your back gas to compensate, thus factoring it into your turn...

It simple won't work in a cave, at least most of the time it won't. There's usually not enough room to swim side by side, buddy breathing is also completely incompatible with scootering. And generally when you're low on gas, you'll want to take a sharp exit, not waste time playing ping pong...

It's the same in Jackson Blue. The cave is about 90'/27m deep and max penetration around 4500'/1.3km. Two stages and LP120s filled to 3600psi (equivalent to 20l tanks) will get you anywhere. You do need a scooter or two because up to about 2700' there is significant flow. As to the agencies, I...

It absolute is 100% just that, in more ways than just one. Just look at how and why GUE was formed. One reason being the lack of training quality at the time and the unwillingness to change by the traditional cave training agencies. To clarify, I'm not GUE trained and looking at this from the...

With all due respect, I believe this to be incorrect information. This "one instructor" has not put this line in. But it is probably really convenient to say so. Not that it matters at all who put it in. We need to keep in mind that a lot of the smaller stuff in Florida was lined in pure...

Just two examples. Horseshoe circuit=green, LST=red. That makes it really easy not to get them mixed up, sadly that happenend quite a bit. The guys at the shop should have a hunch as to the skillset and experience of their customers. Something like "look for the line marker in green" or "under...

As a suggestion, why not just mark the jump lines in the first 2000' of Jackson Blue. Consider putting colored cookies where the lines start next to gold (or other lines towards the exit). Green=good to go both in sidemount and backmount for most divers, orange=advanced passage (silty, low...

A pinched counterlung maybe? Sounds like a possibility if he was stuck in a low restriction because the bladder is right between the body and the ceiling and with the wing pushing down on it. Or maybe he had an excess RMV due to the stress and just felt more comfortable bailing out to OC?

He was on a closed circuit rebreather. Diluent consumption at rest is zero, he would only require the O2 he metabolizes, which is not all that much. His O2 should have lasted for many hours, the scrubber in the CCR being the limiting factor. Most likely, had he been able to remain on the CCR, he...

Established as in "made known". Obviously both the recovery divers and the buddy would know exactly what lead up to the accident. Was there a prior line in that spot or was he running line (or even completely off the line)? Again i don't know of any major SM restrictions in that area, which is...

Has it been established where this happened exactly? It seems very doubtful to me that it occurred on any of the lined side passages in the rumoured part of JB (first T to third T) as I don't remember any of them having something that would be considered a major restriction in sidemount. Of...

Obviously administrators of any board can see everything. So remember to always be kind :)

I get that Pete. It's just that the name and the presentation (chat style) of the conversation resembles typical social media messaging. And I like that. It's not like some stalker actually got a hold of her private email address to sneak in some creepy love letter.

You're calling someone out because he contacts you on a social forum about diving and offers to dive with you? Wow, that's kind of extreme. Most people here are looking either for information or for dive buddies so what's wrong with that? As to the reaction, whatever happened to either ignoring...

Dude, you're here to sell and promote the rebreather so it's your job to convince me that all this has been fixed, not the other way around. So, are you telling me the spirit now has redesigned scrubber canisters with more threads? Does the sidewinder not have plastic fittings with a seam that...

Pretty much everything about the sidekick and the Kiss Spirit (which essentialy is the sidewinder that I'm familiar with) can and should be improved. And I have no reason to believe that it has all been made perfect by now and that no corners will be cut in the future. I'm not going to do the...

Since you asked, here`s my opinion regarding this rebreather. To me Mike Young of Kiss is a great visionary and he comes up with absolutely stunning ideas. Like the sidekick which had a revolutionary concept with the scrubber surrounded by the counterlung, the sidewinder shows some very...

Risky? I think it's worse than that. If the first stage falls apart you have zero diluent and no inflation for the BC or dry suit (which completely sucks in a cave where it usually goes up and down on exit). You also have no bailout. In other words without a buddy you're pretty much dead. With a...

If you have the first stages pointing up towards the body, with most first stage designs nothing needs to be angled at all.

For the record, I refuse to dive in a cave with anyone who has the SPG's set up like that unless the tank valves are angled. Clearly this will not work in low passage, just look at the pictures and how far the SPG's are hanging down. The passage will get torn up, I've seen it plenty of times...