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    John comments

    I did a couple of mix dives this weekend as part of a trimix course, and in
the
    process answered a question I had posted to this list.  The question was,
does
    a latex (in my case, Viking) dryhood keep your head warm when breathing
    trimix, since the hood is inflated with exhaled bottom mix?  The answer is,
    not very well, at least not for the 18/40 mix I was breathing.  My head
    definitely felt cold, although the water I was diving in was very cold
(under
    40F).  The rest of the drysuit was inflated with argon, which helped keep me
    warm overall.

    My overall impression of mix diving was pretty positive.  The decompression
    takes a lot more discipline than air, especially if (like me) you tend to
use a
    computer.  Using two stagebottles is a little awkward, since my normal gear
is
    configured for one, and bouyancy control is somewhat tricky.  On the other
    hand, it's great to be deep and still feel like you are in the shallow end
of
    the pool.

John, I've notice my hands seem to be a little colder but it didn't seem
to be a problem. Once you started your decompression on nitrox I
assume you head and hands warmed up.

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