I am going to begin some bleach bypass experiments. I have read some information on the internet and exchanged information with Poco and PE regarding the process.
There is a lab in Europe that does this for the Cine industry and there results run from subtle to spectacular, but always interesting. Unfortunately their process is a guarded secret.
What i've learned prior to doing it:
Slow film may be better because it has less silver to start with
Bleach works quickly
Bleach works through the layers so a partial bleaching (pulling the film prior to completion of the bleach step) may mean that the top layers have been bleached, but the inner layers may not. This might aggravate colour correction and or may be the key to controlling overall density.
A very dilute bleach may be better than a partial bleach
Lower contrast film may be more printable than higher contrast films or scenes.
I would welcome any other ideas, experiences or examples.
Beach Bypass for cinematography has been extensively written about on the CML; Cinematographers Mailing List. Although it is for motion pictures, you should get some tips from the discussions
IDK standard pull times, but when I make internegatives, I find that 2' 45" or 2' 30" gives about 1/3 or 1/2 stop pull with a nice reduction in contrast. This might be helpful to you in this stragegy.