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Chuck,
I agree with you with the entangle ment issue. 
The leader that i had the debat with is a die hard padi ice instructor.

I agree with the three man team as being the best option but not always 
attainable.

where do you stand on the surface support issue is it neccesary or not?  
I think that it may assist the dive but is not a necessity as long as 
the ice is anchord a continuous line to the entrace is maintained, 
proper gas management is observed and extreme depth is avoided(generally 
most of the lakes we dive do not exceed 100feet so this is not an issue)

SAFE DIVING 

STEVE
>Steve,
>
>   Lines between divers always creates an entanglement hazard and adds 
to the
>tension of the dive if both divers are mobile - no one ever knows what 
it is
>going to do next and keeping up with avoiding several of them sounds 
like a
>nightmare.
>   This whole picture you paint sounds like a leader with no confidence 
in the
>qualifications of his charges or perhaps with his own ability to keep 
up with
>them and control the dive.
>
>   I would recommend a 3 man team in any overhead when possible.   The 
third
>man is helpful if a crippled diver needs a lot of attention and help in 
that
>he can keep track of navigating the way out while the other tends to 
the
>victim.    Gas management and supply is more flexible and covers the
>contingencies with a much greater safety margin.   The opportunity for 
a
>division of labor can take some of the pressure off the diver with the 
most
>stressful job in a crisis as well.   5 starts to up the task load of 
managing
>the team to the point of diminishing returns; communication becomes 
time
>consuming because it takes longer to get the message to everyone in the 
team
>and confusion is more likely; vision ahead is often obstructed by other 
divers
>in a cave and under ice in open water the field of view that must be 
covered
>to monitor the entire team is task loading, tiring, and conducive to 
narcosis.
>    In large groups divers will tend to team up into smaller groups 
anyway,
>each focusing attention on less than the entire team - organization 
goes to
>hell as soon as this happens and it is inevitable. 
>
>Hope this helps,
>
>Chuck Boone  
>
>
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