On Thu, 19 Apr 2001 07:51:59 -0500, Chuck <[log in to unmask]> wrote:

><SNIP>
>> Many reasons.  Perhaps the simplest one is, in swim-throughs, you can
>>
>>         always SEE the light at some CLOSE exit to surface.
>>
>> -- Bob.
>>
>Being able to see the light and being able to get through the hole are not
>necessarily the same thing.
>
>CH

Never said they were the same thing.  The "hole" I was talking about
in Devil's Throat passage are large enough for trucks to drive through,
for the most part.  I also pointed out that CLOSENESS (and other
aspects of diving a swim-through) is DIVER-dependent.

All in all, there are too many special circumstances that not all
unequal to all divers.  But the one-liner of mine you cited is
basically the pragmatic if not definitive version.  If it, or the
diver, does not meet the requirement, then the DIVER shouldn't
attempt the swim-through.

The above is the clarification of my point, given your point -- which
is certainly one of the cases a diver must consider in making his
own assessment.

-- Bob.