As a pool cleaner in high school, I will tell you that using liquid bleach and the TFP way is not going to work for a weekly maintence company, unless they set up stenner pumps for all customers and took care of bleach buying and storage. Even then, you wouldn't be doing it quite right.
All of the pools I maintened in high school were fed 3" chlorine pucks via an inline return feeder. All I ever did was make sure there was at least 3ppm FC in there, the PH was between 7 and 8, and I vacuumed and cleaned the filter (if needed for sand).