I think I like my new method of whipping up lather, which seems to work well with this water-loving soap.
I basically have two relatively wide bowls (actually small cereal bowls), one a bit smaller than the other. I put the puck in the larger bowl, and try to "glue" it to the bottom with some hot water. I rinse scolding hot water through the small bowl, to warm it up a bit, then fill it with hot water, and pour this on top of the puck in the big bowl for a few seconds. Then the water goes back in the small bowl again. I dip the brush into the water in the small bowl and whip up lather in the big bowl, dipping the brush into the warm water whenever needed. The lather built up much quicker this way than my old methods. I also mixed a little Trumper's Skin Food in when making the lather. When I'm all done I rinse out the lather, and put the small bowl into the big bowl upside down, as a lid on top of the puck.