The type of place that Baillif works at is very rare. Many don’t understand working dogs, and don’t really care to understand powerful breeds. You’re probably not getting many responses because not many GSDs are really allowed at those types of establishments. I have one near me where the owner is a IPO helper, place looks good, but again I wouldn’t use it. Although I’d trust the guy to be able to deal with issues, I don’t really think it’s necessary for me to bring my dog to a place like that. We did take my boy to a doggy day care when he was like 4 months old. By the second trip he was kicked out for being too rough and dominant over the other dogs, they couldn’t control him (AT 4 MONTHS) and so they just didn’t want to deal with it. Yes…these were supposed to be “dog people.” They don’t have a problem handling a little Chihuahua, but don’t quite have the experience to deal with a shepherd.
I know the guy that owns the one place pretty well, and I doubt that his employees are making much more than minimum wage (so I’m not sure if that’s financially viable for someone in your situation). I’ll assume that if you can help train, or offer other services, you might make more, but who knows? Most of these places charge around $20 a dog per day, many take about 10-20 dogs a day, so you’re not talking A LOT of income per day and with other expenses, I doubt the employees are getting a huge cut. The majority of the dogs they deal with are peaceful family pets, and so it’s not 100% necessary to be a skilled dog trainer in order to work there. I think most of the employees are high school students.