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  1. gr8jab

    Air shifting?

    Higher aspect ratio (long and skinny) is better? Shorter moment arm? This also implies that right-sizing the wing capacity is important to keep the air close to the C-of-G?
  2. gr8jab

    Air shifting?

    Hi all, I'm diving a Seaquest Malibu (back inflate BC). I'm a vacation diver with a couple of week long trips each year. I do a weight check, but spend the first few days shedding lead and getting adjusted. By the 3rd day, I'm using minimal air to remain neutral at depth and can maintain my...
  3. gr8jab

    Defogger issues

    The wax idea is good. I'm curious if anyone has ever tried it... Insulation is a common misconception. Yes, temperature differential plus humidity will cause the glass to fog. However, the wax (or defog) is not a thermal insulator. It fills the crack and crevices, coating the porous glass...
  4. gr8jab

    Defogger issues

    I use Frog Spit. Like other said above, and unlike what I was taught, you DON'T rinse it away. The Frog Spit instructions specifically say DON'T RINSE it off. I use two large drops, rub it in hard, then do a very fast rinse. A significant amount remains on the lens. When I jump in, I can...
  5. gr8jab

    Coco View Roatan - Dive flags required for dives?

    I like Newman's wall much better than CocoView wall. I think many people go too deep. I saw a lot more life a the top of the wall than 60 feet down. One of my favorite areas is right around the safety stop buoy. If you go looking, there is lots to find. I really like to night dive, and the...
  6. gr8jab

    Solo skills to practice?

    I'm going to make one of those trash bag kits too! But, from the OP... Here's what happened: While at Cocoview, I hooked up with an instructor for a 'refresher' dive. Here's what we did: Gear location practice - while underwater at 60 feet, I practiced the hand motions (three times: once...
  7. gr8jab

    Best day trip diving

    Are you searching specifically for day-long, but not live aboard? The meaning of "day trip" could be considered subjective. Might you mean a 'full day long trip' on the water, versus shorter excursions? For example, when in Phuket, I took several day trips, leaving at 7:00am and returning...
  8. gr8jab

    iX3m and GPS

    Based on communications with Ratio and comments here, I'm pretty sure the DM mistook 'reciprocal course' feature for underwater GPS. Nothing indicates that the iX3m has INS or GPS underwater.
  9. gr8jab

    iX3m and GPS

    Yea, I'm not following @dmaziuk either. At best, he seems to have confused his physicists, maybe thinking of Newton, not Einstein. But also, he seems to be talking about how to return to a boat drifting in a current, which, of course, is impossible since you can't know the position of the...
  10. gr8jab

    SMB as backup lift source.

    Just buy a good DSMB with an open bottom. They inflate quickly and stay sealed and erect on the surface. The one-way open bottom amazes me every time I use it. No way a home-made Velcro closure would work nearly as well. They are $50 on Amazon. Compared to your other gear, that's cheap. No...
  11. gr8jab

    iX3m and GPS

    I would think if they had INS, they would be selling the heck out of that feature.
  12. gr8jab

    iX3m and GPS

    Ah... maybe that's what this guy is confusing with real navigation. Explains a lot. Thanks!
  13. gr8jab

    iX3m and GPS

    @BurhanMuntasser: Any idea what information was displayed to this DM while diving? Obviously, the DM thought it was valid directional information for 'back to the boat'. Isn't displaying questionable or bad information a recipe for disaster? Maybe you could recreate the situation and take...
  14. gr8jab

    iX3m and GPS

    Hi all, I'm quite frustrated. As an engineer, I've tried to analyze all possible explanations before I call BS. Maybe others here can help. Situation Local DM and shop owner claims that his iX3m GPS works underwater. He claims it has pointed him back to the boat (which he previously marked...
  15. gr8jab

    New Boots?

    I loved spring straps on my last fins. Yes, these are new fins/straps, but also new boots. Mind you, I didn't start getting some minor sores until dive 16ish. With my old boots, I had painful sores (from walking, I think) after just 2 days.
  16. gr8jab

    New Boots?

    Are they lycra or nylon?
  17. gr8jab

    New Boots?

    @JackD342 Yes, I like moleskin. It usually stays in place, but getting wet neoprene boots on and off can knock it loose. Plus it gets soaked and has to be removed and reapplied frequently. I love it when traveling, but consider it a reactive solution, rather than preventative (for scuba)...
  18. gr8jab

    New Boots?

    Hi all, I'm a warm water travel only diver. My old boots were giving me blisters at the seam, so I bought some new Tilos Trufit Beach Boots. I'm using large Deep6 Eddy fins. The Tilos boots are MUCH BETTER than my old boots, with no seams to blister my feet. But after a great week at...
  19. gr8jab

    Black jam nut

    Is that the primary 2nd? Don't all Atomic regulators come with the "Comfort Swivel Hose"? I had to buy some special parts (maybe the jam nut) to change to a normal hose.
  20. gr8jab

    'Disposable' retractor?

    Hi Bronco I've been looking at different models with different retracting forces. For my flashlight (2-AAA cell size) I worry about the same things (drooping, or breaking). I'm not too worried about my magnifying glass, it is really light and I have a bunch of spares. I agree the cheap badge...
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