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I've said this more than once. No need for books. This place has links to salient papers on pubmed, esteemed mathematicians, esteemed software writers, esteemed decompression doctors and theorists and enough empirical data to draw conclusions from that are going to likely be more up to...

Are we using SA as an acronym for situational awareness or self absorbed? Seriously afflicted? Soused again?

I carried a small very sharp and very pointy knife on my harness to deal with fishing line and kill fish I speared that were squirming to keep shrek from hearing the dinner bell.

Pubmed is full of studies by doctors and professionals who say otherwise to psuedoephedrine rebound and mucinex working to loosen mucus which doesn't typically know whether it's in a lung or nasal cavity. If you don't want discussion, don't bring up topics on open forums.

Guaifenesin ( mucinex) and oxymetazoline ( afrin) generics are safer, cheaper and are on the shelf. No drowsiness, no getting wired , fewer drug interactions, less rebound effect, longer lasting.

No worries, over years I've become cynical. Thanks for posting the derby info. Never enough can be done to reduce the effect those invasive little buggers do.

So is this advertising under the guise of being information?

Pubmed got free articles but all the salient points have been thoroughly discussed here by some of the preeminent researchers in the field and its free AND amusing.

I've done 40 deep dives in a week diving extremely stupid profiles in 130' to 180' and have a buddy who got bent in 90' diving well inside a Suuntos NDL on dive two after a 2 hour plus SI. Way to subjective and variable to make authoritative pronouncements. Got skin bends lobster diving...

Also had those friends. And a shop who turned a blind eye to the tanks they knew had oxygen in them years before there was a nitrox cert.

Yessir. Orca EDGE, Skinny Dipper or Marathon.

I mean my computers have an on/off switch and have no memory or ability to track dives when turned off.

Biller has a semi closed muzzle, allows shaft to be snapped into place rather than muzzle loaded. Biller will also take JBL notched shafts but not vice versa. Freeshafting can be and is done with just about everything. Enclosed track shafts must remain very true or can bind.

I routinely did 30-40 dives in a week in 80' -180' /25-55m using ~90/90 and turning off my computer every night to keep it from tracking 02 or slow tissues. Last dive or two of the day would often have a little deco but the first 4 or 5 were of direct ascents with any decompression obligations...

Diving paid for my diving. Including boats, compressors, gear, tanks, vacation diving lodging and rentals and a lot more. All I had to do is kill fish and lobsters in sufficient quantity to make a profit after gear, boats, compressors, travel and licensing costs.

Can't you chose to set custom gfs like 77/84? And for NDL I can't see it making much difference. Maybe a minute here or there but more an anorak task than practical.

The euro guns are measured from the notch to the band opening on the muzzle in cm. That will give you an estimate of the comparative length. Probably going to end up around an 80.

Probably could use a single wrap. Unlikely that gun will have any penetration beyond that no matter what you do to it. Best mod on most guns is bands, I used 20mm / 3/4 inch @ 300+% stretch. Take the length from the band opening on the muzzle to the notch you will be using to determine band...

That's a baby, 6m would get me waiting a while but I was always spearfishing so. I wouldn't knowingly dive in aroud gws, makos or tigers but had tbem show up during dives interested in scooby snacks. Super not nearly cool as the baited videos.

High 02 deep risks the narcosis impairing the ability to notice oxtox symptoms. So it's a plain no for me.