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Date: Sat, 15 Mar 1997 15:05:14 -0500 (EDT)
To: <BrianE@an*.an*.ui*.ed*>
From: taylor@ru*.ne* (Tim Taylor)
Subject: Re: Dry Suit Hoods
Cc: techdiver@aquanaut.com
> I'm looking for comments on dry suit hoods: attached vs non-attached, neoprene
>vs latex.
>eddie-brian@ui*.ed*
 
Depends where and what you are diving.  If you frequently bump your head
into things and have to replace your hood, a detached hood has merit.  For
diving in COLD water, I prefer attached hoods.  If I never dove colder than
45 or 50 deg F, I wouldn't bother with the hassle of  the attached hood.  (I
also put on my dry gloves below 45-50)


Attached vs. separate:
I like an attached hood for warmth.  When I had a separate hood I used to
frequently have a ring of ice water around my neck, not warm.  Not a problem
with the attached hood.  Another advantage to the attached hood is that you
can trap air in the hood.  Gives you a warm, dead air space around your
head. Another advantage is that when you twist yourself into a wierd
position and that inevitable gush of water goes down your neck, you get much
less and it is already warmed up if it comes from inside your hood.  

Disadvantages:  pushing your head through the neck seal is more of a problem
with an attached hood, twice the material to get past. If you have
difficulty getting past the neck seal, think twice. Until you figure out how
to vent the air bubble from your hood, it can be a real pain when it pulls
your mask up, flooding it and deforming your nose. 

Latex vs neoprene:
Neoprene compresses.  Down deep, a neoprene hood will lose some of it's
insulating value. If you use an attached latex hood with some separate
insulator to wear underneath, you can put air in the hood allowing the
beanie underneath to expand and regain it's insulating value.  The latex
hood can be sealed on your skin so that you have a dry head after the dive,
but I've seen people injure their ears when it seals too well and the hood
material is forced down the ear canal. Negative point on neoprene hood is
that like any other neoprene item it can eventually take on "that dive gear
smell"  and if it is attached to your suit, it is a little harder to wash.
Another problem with the latex and beanie, is you can leave the beanie on
the boat accidentally.

Having said all that, I use Viking with an attached neoprene hood, and will
not be likely to switch.  I use this suit in the Great Lakes in temps from
34-55F, and the only time my head is cold is right after I get a haircut. My
wife dives in a latex hood and beanie. Since she learned to deal with the
bubblehead problem described above, she's been happy. 

Tim Taylor
taylor@ru*.ne*

Whitefish Point Underwater Preserve web page and 1997 FSUPC Photo Contest
winners
http://www.rust.net/~taylor

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