.. I have tall radiators propped a pillow cased stuffed with a regular pillow and other small pillows and sit on top of the radiator. I tied the bottom with a long piece of material and it worked fine. I now have a unit called BAS, or Body Action System that is similar to a heavy bag but has a separate torso and head. I love it. I like it because it is portable... it does need sandbags to weight it down, but that's not a problem for me. Here is the link if you are interested in checking it out:
BAS Body Action System - Bas Rutten Workout
The price was $325.00 not much less than the Wavemaster that Cathe uses. I like the one she uses, but I wanted something that I could move or fold up and store if needed.
I love Cathes Hard Strike tabata heavy bag workout, I did it today and it was awesome. I also have her MMA Boxing and love the heavy bag workout on that one. I also have the Addiction workouts and Amy Bento's, Rumble, she also has 3 heavy bag workouts on her dvd, workouts 1 - 3.