One example of working more efficiently is not detailing the windows, that can take nearly as long as soaping up, and sometimes if you leave a lot behind, it can take as long as soaping and squeegeeing. I dont mean leave the windows a mess, I mean don't leave anything behind to detail.
When I worked with scrims I only cleaned it out about once a week, no I didn't go about with a dirty scrim, I just very rarely used it.
Peter