I don't personally do this, as I don't have any significant need to
traverse holes this small.  For those that need to squeeze into the
cracks, the sidemount becomes the safest (only) way of accomplishing
this, and is DIR for that environment.  This has nothing to do with the
systems I have used or gear failures I have endured (although I did try
many different things before DIR), but rather follows from logical
reasoning.  Consider the probabilities of failure of each piece of
gear, necessary redundancy and the response to every conceivable
emergency scenario, to determine what equipment configuration provides
the most survival options.  The "Assumption of risk" is choosing to
dive (in tight caves, or at all).  Beyond that, the decisions are made
for you if you think everything through to the last detail.

-Sean



On Fri, 5 Nov 1999 11:19:20 -0800 (PST), Mat Bloedorn wrote:

>Hank,
>
>Stop tip toeing around the subject.  What exactly are
>you trying to say?  I thought Sean was pretty clear
>that for any given mission it is best to use the
>safest method possible.  That's how I interpret the
>post.  What type are mission are you referring too? 
>If you have some other point to make then make it. 
>What type of mission are you talking about?  What
>configuration are you talking about?
>
>> you find yourself in a place that does not allow for
>> "normal" diver 
>> configuration (i.e.. DIR). so you elect at that
>
>Where is it that you believe DIR is not appropriate
>other than perhaps the specific mission mentioned by
>Sean?
>
>> configuration (i.e.. DIR). so you elect at that
>> point to change from the 
>> "standard gear" to (by your definition) a riskier
>> configutation. your 
>
>Why would you possible choose a riskier gear
>configuration?  
>
>Mat.
>
>--- GarlooEnt@ao*.co* wrote:
>> sean
>> i can appreciate your thoughts on this; however
>> think carefully about what 
>> you are saying.
>> first you are diving in an environment that in & of
>> itself is dangerous 
>> (i.e., overhead)
>> you find yourself in a place that does not allow for
>> "normal" diver 
>> configuration (i.e.. DIR). so you elect at that
>> point to change from the 
>> "standard gear" to (by your definition) a riskier
>> configutation. your 
>> justification for this is that you weigh the risk &
>> chose to dive this way, 
>> based on the task that is before you (i.e., to drag
>> yourself deeper than 
>> anyone else into a spot no one has been before for
>> whatever reason you can 
>> use to convince yourself that it is important enough
>> to do).
>>                  *****please don't misunderstand me-
>> i happen to agree with 
>> your philosophy on this. i am not putting you down
>> for what you do. i am 
>> merely questioning your attempts to stop others from
>> having the same thoughts 
>> on doing what they do*****
>> again i am not trying to say that side mounts are
>> bad or the ID"s are good. i 
>> am only pointing out that you are the one making the
>> assumption that you risk 
>> taking is better or wiser than someone else's risk
>> taking.
>> hank
>> In a message dated 11/04/1999 4:05:31 PM Eastern
>> Standard Time, 
>> ststev@un*.co* writes:
>> 
>> << Hank, that particular statement was made with the
>> important implication
>>  that sidemount diving be employed ONLY when
>> necessary, such as when
>>  back mounted cylinders do not fit into the cave
>> passage.  You quote my
>>  comment out of context.  The risks that I will
>> accept are limited by
>>  the fact that I will use ONLY the safest possible
>> configuration for the
>>  given environment (short of calling the dive). 
>> When tanks fit on the
>>  back, this means an isolation manifold.  To incur a
>> risk that is
>>  entirely unnecessary is what I cannot accept.
>>  
>>  -Sean >>
>> --
>> Send mail for the `techdiver' mailing list to
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>> 
>
>
>=====
>M-Plan - Free-Ware dive planning software utilizing
>the Buhlmann ZHL-16 algorithm at:
>mailto:mbloedorn@ya*.co*   http://www3.sympatico.ca/bloedorn
>__________________________________________________
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