Bill have you ever seen an off-the-shelf system do this? These are not even riggers and the system was weighed for the woman, 30lbs lighter. This CW system exists because an innovative design team set goals. User-friendly, self-contained, self-plumbing, positive pedal lock, retractable liftline etc. If your consultancy made an equally innovative approach to manual theater linesets you could advance them from 1927 Model A technology to 2017 Toyota safety and usability. That nobody else has done it in 100 years is all the more reason to do it.