The number 1 is persistence. If you pick 5 places and check in every week, it will pay off. Fill out your app and go in every week to ask if there is an opening. Your persistence will show your willingness to be responsible. I did it for dish-washing in the 70’s.
When you guys mean going back every week, do I talk to the hiring manager? What do I say/ask? This sounds like a good idea :)