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>That's why you should use aluminum 100s instead of steal 104s.  The BC 
>should only be used to compensate for wetsuit compression and gas mass.

I agree in principle with what you say but, 104's give you a lot of volume
if you give them a 'good' fill.  At the beginning I did not like doing that,
but after a week of cave diving, I got used to it and I like to be able to
do so.  This is probably why I like 104's soo much.  


>Deciding what things to have redundancy for is very easy.  Ask yourself 
>this: Will I likely die if piece of gear X fails?  If the answer is yes, 
>take a backup.  If no, then the only reason to consider a backup is if 
>you'd have to abort the dive if piece of gear X fails, and you don't want 
>to abort the dive.  The trick is optimizing probability of survival and 
>probability of accomplishing a task. That's all there is to it. In 
>general, it is best to take with you the least amount of gear possible to 
>achieve this, because superfluous gear can often adversly affect your 
>chances of survival. Obviously, the things that are important to backup 
>will change with the dive paramters.

I agree with this at a 100%.  This is why I almost never have the same gear
configuration on my dives (depending on risk, water condition (temp.), goal,
importance of acheiving results, etc).  I always bring whatever I feel is
required for the planned dive... nothing more, nothing less.

Some guys say that they always dive with the same gear, but it is not true.
Are these guys bringing emergency uplines in caves?

Michel Therrien
m.therrien@ne*.qc*.ca*

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