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Only on this list can a simple request for information become argument.

People need to use the computers keeping in mind the basic limitations of
the underlying model in which they are created.  I can see using a Trimix
computer.  But, reverse, spiked, or yo-yo profiles are forbidden under the
Bulhmann (proplanner's base) model.  It assumes a square profile like oh, so
many of the decompression models we use.

The cavers are limited in bottom time by max depth of their dives because of
the spiking in the profiles they are diving.  Probably, they use extreme
conservatism because of the inherent risk in their profiles. Caves don't
allow the Bulhmann model to be use as it was intended.

Wreckers seem to have a easier time of it because of the uniform lie of the
wreck itself.  That does allow the models to be use in a manner consistent
with the table design.

RGBM does allow spiked profiles and the WKPP types have made good use of
this model in its ABYSS form.  Unfortunately, SUNNTO is the only
manufacturer currently shipping with type of model in their dive computers.

The basic point --  Use the decompression model in the computer as a guide
for use.  Don't use the model or computer in a way that it is not intended
for.  Tables are an excellent backup for computer users, especially if they
use the model the computer is using. (VR3 computers = Bulhmann IANTD tables)

I, for one, would appreciate having a few more brain cycles at depth, not
having to think about my decompression profile.  But you should not think
that I am not prepared for the contingency that my computer could fail.











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