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  1. oya

    Zero to Hero

    Yeah, if I was in charge of everything in the whole world there definitely would be something along the lines of a bailout radius of 1/3 of gas supply. Luckily I'm barely in charge of anything at all.
  2. oya

    Zero to Hero

    Was going diving in the afternoon and hit "post" with only minutes to go before I had to go back the truck. Instead of doing my usual, "let's go back and reread and re-edit this thing about 30 times until my eyes bleed and I'm sick of the entire topic." Already fixed the cave/care one...
  3. oya

    Zero to Hero

    I have the same conversation with people pretty frequently. "I'd like to come down to do Cavern, Intro, and Full." And then I wind up writing a zillion word email on why that's a terrible idea. Usually people are receptive. I like to think that they're asking a cave diving instructor about...
  4. oya

    Harnesses for non-"average" bodies

    :D:D:D:D:D:D:D:D:D
  5. oya

    Harnesses for non-"average" bodies

    I have the same conversation with people a lot. I wrote a thing so that maybe I could just say, "Here, read this thing," instead of having to repeat the exact conversation. Maybe it will help you not have to have the same conversation with someone, too...
  6. oya

    Math is Scary - Drowning is (probably) Scarier

    It has been some time since I have taught an Open Water class.
  7. oya

    Math is Scary - Drowning is (probably) Scarier

    Neat. My chief credential to this end is, "Having had to track a dozen people's gas at a time for them every single day for several years." But the reason I wrote this blog post in the first place is that it has not been infrequent that I have had technical divers or even instructors who have...
  8. oya

    Math is Scary - Drowning is (probably) Scarier

    I'm glad you enjoyed it. I enjoyed writing it. One point: the whole exercise was really to point out how after an information garnering dive (SAC rate) then you can sit on your couch and write down 4 numbers for different depths that will hold true for as much as the rest of your entire dive...
  9. oya

    Math is Scary - Drowning is (probably) Scarier

    You're going to want to look into breaking that habit sooner than later as/if you intend to ever dive deeper than about 30'/10M.
  10. oya

    Math is Scary - Drowning is (probably) Scarier

    It would make a refreshing start.
  11. oya

    Math is Scary - Drowning is (probably) Scarier

    "Divers aren't drowning left and right." Anyone who has ever worked as a destination divemaster anywhere on the planet will tell you: it's sort of a miracle that it doesn't happen at least once a week. On their boat. And would if they weren't there to monitor 12 people's pressure for them.
  12. oya

    Math is Scary - Drowning is (probably) Scarier

    I wrote a thing about a thing that I am baffled isn't taught more. Newer divers: do some math. Mentors: help them do some math. https://www.xoc-ha.com/post/two-plus-two-equals-purple
  13. oya

    CCR Selection priorities

    I would like it if someone would tell me how well my rebreather breathed as measured by a machine for me.
  14. oya

    Intro Cave Suggestions

    Nothing in the rules says you have to END a dive with 3 lights, you just have to start a dive with 3 lights. So if you have a primary light failure within 10 minutes of the start of the dive, whatever. Sounds dumb, doesn't it? That's probably because it is.
  15. oya

    Part time vs full time instructors

    I'm surprised at the number of people responding, "I don't know any full-time instructors." They do exist. However, as a few folks have pointed out: there are caveats. To work full-time as an instructor almost certainly means living in a tourist destination area. This leads to a couple of...
  16. oya

    Why choosing an instructor sucks

    To the OP: Regarding four of your five points - reach out to a bunch of people. People who have been trained, different instructors... send emails or PMs. You'll click with some and might not click with others. In the end, as seriously as everyone like to take themselves in any small...
  17. oya

    Getting Things To Line Up Just Right

    There's not much to it, really. There's a lovely, little dry chamber about 20' across with a puddle in the corner. I went in the puddle one day and am not likely to repeat the experience. There's no passage to be found, just lots of breakdown. Oh... and no room for proper gear. So it's a...
  18. oya

    Getting Things To Line Up Just Right

    We're hunkered down here on the Riviera Maya and doing our bit to slow the spread of the COVID-19 virus, so I spent a day writing a tutorial about sidemount (complete with pictures) and how to troubleshoot common problems. Enjoy, and hope to see you all on the other side of this madness...
  19. oya

    Rebreather - Cost of Ownership

    Well, the vast majority of instructors, manufacturers, and actual industry experts all agree a certain set of rules apply. You follow a different set of rules. One that, you might say, deviates. If it quacks like a duck, man...
  20. oya

    Rebreather - Cost of Ownership

    Tom, there's a phrase already in place for what you're espousing here: Normalization of deviance. It kills people. Stop.
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