Drag car brake/proportioning question

I know Cass at Doctor Diff recommends a distribution block for all disc, or all drum set up, but I think that is really for street set ups. That said, when I had my drag car, I ran an adjustable prop valve on my all disc car. I do remember having to actually put more braking to the rear then normal since the front skinny tires did not have a lot of traction for stopping. Every car is different, but having the availability for adjustment is nice if you need it.