For film I run PE's Superfix sometimes, and it is usually done in under 2 minutes, so why peek. I do pull on time, because this stuff has enough punch to vaccuum up the image as well if left too long.
So more often I run TF-4 scratched mixed. It is more of a 3 minute stuff. so for film, why peek.
For prints it depends on if RC and FB. If RC in TF4, 1:3 with a slosh of the tray at the beginning. So I usually lights on at 1' or so, and flip to the rinse tray after 2'. This is with a running water stop bath.
For FB, 30" acetic stop bath, 3-5' in first fix (lights on after about 2') , then to a still water holding bath, and 5 minutes with agitation for all all prints, and flip my way though the pile for teh full period.