I have a time walking all 7 of my dogs. I usally have to split it up in twos. I am wondering if there is some type of harness or if it will even work, to git them to pull something not like in sledding but ah i dont know just hook them up to something to wear them out faster and to be able to let them to run and work all at the same time. I got 6 that i can hook up to something. 2 hounds, 2 GSD, and 2 ACD. I dont know if it would work or not with it being 3 different breeds. We have alot of options of going to the dirt roads to just let loose i would like to do something like that that way they can all run and work at the same time to make for happier dogs. Any ideas or suggestions?