I would basically set up a deal with the manager / owner to go into the store X times a month.
I would make up areas of the business to be evaluated (Ex. For a fast food restaurant, I would say if the food came out in a timely manner, if the interior was presentable)
This would be a service business, so I don't really need any loans or assets. I would fill out a survey for the owner / manager with a little typed up report and they would pay for it.
It can work in goods or service businesses