The rubber band feeling is from the inertia on the draw bar to the bike... I get kicked in my rig when the weight is heavy in the front of the trailer... it has nothing to do with the frame, tires whatever... physical laws are in effect. Although you can reduce your perception of the feeling by starting out slowly and smoothly and slowing down gradually - I am constantly running the Jakes in my truck to keep everything smooth. Just my take on the situation.