Hi,- yeah,..just buy a couple of feet of clear hose at a hardware store for a couple bucks and split the tube down the middle with some scissors,..it will snap right over the bars ,..a good $ 2 investment. My favorite dummy is one I made from both steel and wood. Wood for the skeleton for pivoting, and wood to bulk it up ,..then wrap it at strike points with 1/2 braided old rope,..I left the steel raw so it looks like something out of an old samurai movie,..pretty cool. Might give you some other ideas.
-Ron