Actually, I think I have something better for Syd to take on the road. I have a drag/roller that I pull around to level out the dirt in the paddocks; it's made of a few lengths of progressively larger diameter pipe inserted one inside the next. It weighs about 30 lbs, and is about 5 feet wide. The outermost layer is a piece of 3" diameter schedule 40 PVC. Even on soft dirt, it clunks and scrapes; I'll bet it would rattle pretty good on pavement. I'm still trying to figure out how to make a hitch for it, but I figure dragging it in the paddock and the driveway will be weight/pressure on the collar, even without the noise.
