I have no horse in this race, but what if you had people bring the birds to you for processing? Or let them use the unit while you run it? Is that possible? I don't really have a clue how the machines work, other than not losing a human finger... But if there is a concern about renting it out, could you rent it out on your property? Just a thought... Feel free to tell me I am an idiot.
Gosh no, you're not an idiot. I am afraid to rent the unit and get it back broken, or worse, have somebody get hurt using it. I'm totally with you in your suggestion to accompany the unit and operate it for those "renting" it. Wonder what such a service should cost. I'm stumped.