well... you're spending $109 and still need someone to hold it. I'm not sure what you had in mind but IMO, you're better off getting a heavy bag for the same amount of money. And if you do have someone to hold it, why not just get focus/punch mits? You could do just as much and more because you can practise slipping, and bobbing, etc.

Honestly, it seems to me like it's one of those items that falls into the if-you-make-it-someone-will-buy-it category.