Most of the strong mals I know of are trained mostly with the ecollar when they get to be adults.
as far as the pressure aspects, have you seen some of the KNPV and NVBK training? Some of those KNPV training methods are pretty gnarly, and most all use compulsion for many things. It is amazing that anything is left of some of those dogs..what usually happens is the dogs become pretty hardened for sure.
here is 5 month old knpv dutchie (same thing as KNPV mali but with stripes)...after drive was built for the box,
the dog is being trained to go to box and bark, without biting it.
E-Dog - 2012 WPBTCA National Championships
The time when screech owls and Bandogges howl and spirits walk and ghosts break up their graves.
Act I, Scene IV of William Shakespeare's "King Henry VI"