Martha, I think it's a good idea. I think it will help the dogs to be more adoptable. Does the shelter have a fenced in play area? The thing that immediately comes to mind for me is that these dogs are probably in a small kennel area all day. They are in a very stressful environment. They are going to need to run off some of that excess energy and stress. It is hard to work with a dog that has all that pent up energy. If you can exercise them for a bit before trying to work that might help you be more successful. Or if they have the fenced in play yard area you could incorporate play with work. Perhaps a Flexi might work? I don't know. Perhaps others have some ideas. HTH Julie