I have a harness I use for walking my dog with the leach clasp on her back. I would like to use this on her while we are out in the back yard with the 30ft leash. The harness fits pretty well and it wouldn't be super easy to wiggle out of, but I think it would be possible. So what I'm looking for is something that I could connect the harness to her collar as well to act as a sort of safety in case she wiggles out or something. I've been looking around but can't quite find anything. Any ideas?