motorcycle dolly

[Deanohh_imp]

On the Harbor Freight unit, is there a way to lock the casters so the unit doesn't roll away when you try to ride up on it - or how does that work?

No wheel locks. On each end of the main channel are cam shaped things with a lever that rotates the cams to lift the wheels off the floor while making a little ramp to rollup on. The drag on the floor keeps the whole thing from moving until you roll the cams back down which lowers it all back down so the wheels are on the floor.