I have the Bike Tow Leash and really like it. I haven't tried it out on big boy Russell yet, but it's worked great for the girls. They can't pull me over (Carly tried).
~ Diane in Okla
Carly ~ AKC Champion, GCh pointed, HIC
Sage ~ AKC Ch. pointed (13 pts - chasing that last major), HIC
Russell ~ the big boy
Mimi & Pi ~ the meezers