Davo,
Ralph, in his vid, tells you to visit the Caswell site.
The loading of the soap is a personal preference thing and is done to achieve what is necessary.
I have watched professional polishers in Rolls Royce, where I worked for a time, polishing stainless steel parts (no chrome, or very little, on a Roller) and they were using the polishing soap as though it was going out of fashion a was being given away. They would load the buff up until it was almost dripping off. Those chaps could remove a 1/8" casting mismatch on a door handle in no time.
We are only playing at it.
Bogs