I have and do use the product. Bought it about 2 weeks ago and run the dog (a rescue, so as far as I can tell, a pure coonhound). He loves it. We usually walk for about 2 miles but he still has energy so I roll out the bike, attach the dog, and he pulls the bike for another mile or with some assist from me up hills. It works fine and he does get distracted but the device restricts him from pulling so hard that you lose control of bike. The walky dog keeps him away from pedals and keeps him a safe distance when making even tight turns.