We just took our trailer around the park trail the other day - we went to a sport store and bought a mint condition BeBeLove bike trailer that carries 100 lbs. DH did not feel hardly any drag with it and loved hauling it. We are thinking of putting our little corgi (she is disabled) in it and taking her to the park. It was made to haul toddlers and is the type that will not tip over. We got it used and it was in good condition. I would feel better hauling my dog in a trailer and the best part is, other trail users thought we had a baby in there so they gave us lots of room. We intended to haul groceries with it when we first purchased it.