Neighbour kindly took photos of my brief demonstration ride. I rode at various speeds, braked softly, braked hard, etc. The trailer definitely feels heavy -- you can tell you're towing 30 lbs. But the hitch is rock solid, there is no "wallowing" or resonance in the load. You can brake hard and the only effect is longer stopping distance, there is no feeling of rubberiness or lateral force from the load.