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The reason for extra conservatism is because even doing things perfectly people still occasionally get bent.

I agree to a point. I agree that if your computer fails and you have no backup that was used concurrently then your diving is done, kinda. If you know your max depths, bottom time, and SITs for all dives you've done in that 24hr period. What difference does it make if you started with a table or...

Again, understood, however I do it just to keep familiar with the tables. Also in the unfortunate event a computer battery died and I didn't dive the second computer for some reason, my dive day isn't necessarily over. Not to mention, it's something to pass the time while waiting for the next...

Understood, I was just looking at a variety of sources to see which maybe worked for the scenario I shared. I knew PADI had more pressure groups so I was curious if it could've hit that 25 minute mark or not since I'm much more familiar with the NAUI tables.

They actually we're repetative dives, I had dove less than 24 hours prior when I recorded the dives in the book, I just omitted that trying to simplify the example a little. So technically yes, you're correct that my AMDT was shorter, and I had redone the math again tonight to double check and...

Another note, I just compared dive #1 to the PADI tables and it's 10 minutes longer than their NDL for 110'. So the PADI tables also wouldn't have allowed a repeat dive unless I shortened my diving at least 20 minutes overall. Multi deco also would've given me 28 minutes 36 seconds of deco...

I usually do tables and computer... Kinda. I dive NDL typically and use the computer, several actually, concurrently. At the end of the dive when I'm filling out the log book during my SIT, I break out the tables. I do the math for the square profiles and generally record the letter groups...

This was my response to the "DAN worthless" post:

It does, don't really notice the weight harness at all to be honest. The belt webbing of the BC harness is about 3 inches higher than the I have the belt for the DUI system. Also means I can use a crotch strap without having to try and put a belt on over it. Been diving that setup almost 10...

Except when I forget to put it on before the BC which happens in the rare occurrence. I usually run between 18-24 lbs depending on wet or dry since I'm usually in a 7mm or dry suit

Personally use an DUI weight harness with quick release pockets for single tanks on a Diverite transplate + recwing and no additional weight with doubles.

I typically go based on whether my computer starts recording a dive. I once spent over 3 hours above 5 feet while working at one point, with a few short trips to about 20', would you not count that simply because it was not below 15' for 20 minutes? My head was underwater, I was performing a...

My assumption is this, though I'm not a doctor. I too regularly inhale through my mouth and exhale through my nose and typically have a bit of stubble/scruff. My guess would be that as water leaks into the mask, it is displacing some of the air which is then escaping from the mask. I almost...

The intent is that either the diver or potentially DAN could help. We also occasionally have divers on first aid calls who also know to ask. Typically the EMTs are also instructed to try and get the profile before they leave the boat. Whether or not DAN is any help from that perspective we...

A rescue squad I volunteered with and still occasionally assist with has dive emergency procedures pretty well covered, granted they have a dive team for SAR... At least for our squad, the Divers hold training with the EMTs to cover dive related emergencies and what to do outside of the...

I believe spearfishing is permitted, but be mindful of what you shoot and keep to limits, game wardens do patrol there and I have been stopped by them while exciting at the beach by L street.

That's fine with me, realistically though, if I'm doing a serious dive with doubles, I'd more than likely also have stage. So I'm the event of a need to share air, once I'm above the mod, I'm switching to my deco gas regardless and they can have at it on the back gas. Otherwise I'd assume it's a...

I definitely agree buddy selection is definitely key. I also agree that rescue courses are woefully oversold and provide a false sense of competency imo but that's not for this discussion.

I am, but **** happens, and in reality, very very few people know how they would react in a true ooa emergency. Simulate it all you want and figure out your RMV for high workload and such to figure out requisite air, but at the end of the day my intent is to go home. I'm not cutting off their...

Personal preference. The theory that a diver whom is probably also on doubles needs to take air from you, the assumption is that their breathing rate is elevated. Since if their on doubles and need to share air from me, something had gone horribly horribly wrong. So the thought is they are going...