I bought a puck of Williams yesterday to try out and see if it is different from the stick I have. This morning I dipped my Semogue 1350 boar brush in cold water and shook out the excess, loaded the brush on the puck and face lathered. The single loading gave me enough for a 3 pass shave and some touch ups.
No different technique from how I use my other much more expensive hard soaps. I can't believe the trouble some are having getting a lather from the Williams puck. It is not the best lather but far from useless. The other hard soaps cost 5 or more times as much and produce more and better lather for sure, at least twice as good but not 5 or more times as good. For what you pay for a Williams puck you do get what you pay for, a basic usable shave soap.
The scent is different between the puck and stick. I suspect the formula may be different too and the stick is a slightly better performer for me.
Bob