So you have five Flow supers on every hive. To empty all you would need to setup five manifolds and manifold them together into a container.
At a site with 20 hives you need 100 super manifolds. You would need 20 twenty gallon containers. Each frame is 6.5 lbs of honey. For 10 frame hives with 7 Flow frames in each of the five supers you would need 20- 230 lb containers. You would need a forklift to load these full containers or fill and load 38 five gallon containers. All this would have to be kept clean and sanitary in the field, transported back and forth, and rinsed clean or be left behind to be robbed out. Then picked up later. And then rinsed.
Is this going to be more cost effective than harvesting all the supers and bringing them back to an indoor facility for old fashioned processing?
All of my opinions and suggestions are based on my five decades of actual beekeeping,
not so much on book learning, watching YouTube videos nor reading internet sites.