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Where ever you rub the alcohol, actually its least effective on the bottoms of the feet, where the skin is thickest. I use regular 70% isopropyl alcohol.

for hiking, i often tell nubies to rub their feet with rubbing alcohol nightly for 2 weeks before a hiking trek. This seems to prevent blisters, for hiking, and I should guess for diving too

First get the basic safety stuff, flares, mirrors, maybe smoke, dye or rockets. Then the electronics. Older style EPIRBs (ELTs PLBs, 121.5 or 243mz, or 'class B' units) should be avoided. New 406mz are ok, but get a unit with GPS built in, positions from this kind are more accurate, and are...

I am a licensed ham radio operator, a pilot, a diver, and I kayak. I have 6 or 7 5 watt vhf radios for different bands (marine, ham, aviation -- all from 108 mz to 146 mz) . I have used them from kayaks, and in the water (as a test). I don't bother to carry any radios diving. If you want to...

A jacket BC, about 20 years ago. I know. I learned to dive with an at-pac (still have it, but wont dive with it...) and should have known better... A sherwood bc inflator/alternate regulator. Well I got it with a first stage (scubapro mk 10) that I wanted for a stage bottle reg. The whole setup...

I carry a small blunt knife (sharp, I sharpened it my self), and a line cutter always. I often carry a pair of emt shears too. There are lines (steel leader, spectra, etc) that are incompatible with a knife. BTW, double edged knives, like the Riffe Silencer, are illegal in california -- a...

The number may be out-of-the-hat as you describe, but there are technical specs that must be met at the selected depth, in order to qualify for the CE cert. I believe the spec is something like -- the regulator must be able to support two panicked divers inhaling at the same time AND depressing...

This is my understanding of the conventional technique too. but I find that with my computer on my left arm, with it twisted a bit so its on the side of my arm instead of the top, i can see it just fine while adjusting my bc. In fact if i hold the inflator up a bit (as I was taught), and i...

If there is water running up your legs as you kick there is something wrong. That needs to be fixed. Beyond that try a hood from Monterey bay wetsuits, the custom fitted 1/2 inch one. -brian

Actually in some parts of the US (california) position of a "double edged" knife is illegal, i believe. They are considered "daggers" and are not legal outside of your house. If you got to online knife sites they often say something like they wont ship to xxx. If my memory is correct (and it...

This is the classic (and perhaps only) situation where a double wing is a good idea.

Well the real issue is tracking you residual nitrogen loading. This is particularly important in a multi dive multi day trip. If you don't know this in when doing multiple dives, you can easily exceed your no-deco limit. I often reach 80% or more of my nitrogen load after a three dive day. This...

I have family that will happily fight over my gear.

Have not actually asked regarding dive computers but for their other kinds of compasses (hiking, aviation, and surveying) they calibrate them according to 'zones', there are five. almost all computers sold in europe, us, japan, etc are for the same zone (i believe it zone 1). Australia, south...

OF COURSE we all have empathy for the survivors, and feel sorry for their losses. There are very few total louts here. Suppose all the 100,000 (or any substantial subset) or so scuba boarders posted their condolences for every death how could we ever find analysis of events mixed in the mess...

I went on a dive in monterey, on one of the dive boats. Just as we were about to leave a heavy set guy came down to the boat and got aboard. Seemed pretty disorganized to me. His gear was ratty, looked like rental gear. Was trying to fit a pony bottle to a tank and was having problems. when we...

Also good in and around kelp...

I was on a live aboard dive boat on a three day dive trip when my AI computer failed. the boat crew wouldn't let me dive for the rest of the day, even though I had and replace the battery. The problem, as they saw it, was that my residual nitrogen loading was no longer known, and thus I could...

The real problem I have seen is when someone, who doesn't get the righty tighty stuff, turns the valve off then a quarter turn on. This will give a good reading on the spg and will give a satisfying hiss when you purge. You can even get good breaths on the regs -- at the surface. BUT once you...

I have gotten good service from Scuba Vision - Custom Prescription Scuba Masks An optometrist who free dives, in Ukiah, CA