Put it in a bag. Hold the puck and lather in your hand or rub it over wet face like a shave stick and lather up on your face. Leave the bag open to air or close it up, either way the puck will continue to perform, whatever.
MWF is excellent. I think a few people have problems lathering but no issues here in my soft water area.
I soak my brush in very hot water, shake the excess water out very thoroughly and lather away (face not too wet, mind). Don't worry about re-lathering....the stull lasts for ever!
Great under-stated smell and lovely, smooth feel afterwards (says my wife).