I have something like this in my room....not good/not bad, but doesn't really show you what hitting a real person is like. It could be good for speed tranining, but if you front leg kick the shit, it's going down.
Yeah I heard that they can be knocked over too, but I think with sand in it..which will make the base 450lbs. it would be pretty hard to knock over, and a non slip mat under it would keep it from moving around. Here's a video I found on youtube of a guy kicking it lol, and thats just with 250lbs of water and on a carpet. http://www.youtube.com/watch?v=vFuYc...e=channel_page