Originally Posted by
theEconomist
I have done that. It is okay if you just hold the leash in your hand and let go if the dog sees a squirrel.
No need to let go of the leash - you just need to balance the weight of the bike and the weight of the dog. A 50lb black lab requires that you be riding a 50lb Schwinn Typhoon with coaster brakes. It is amazing the kind of acceleration that is possible with this setup.