I have the ding king kit that came with the slide hammer. I don't think it's crap, but it isn't going to pull out every dent perfect. My hatch had 1 small ding in the bulge, 1 medium ding, and a decent sized dent. I pulled the small ding out to an unnoticable state, I've started working on the medium ding but probably won't get far due to it being very close to the window, and I pulled the dent out and turned it into a ding.

I'm not done working on these yet but I will post some before/after pics up, possibly tonight if I get around to finishing them.

A lot of variables come into play on dents/dings so it might work out for you and it might not. It is very rare for the ding king tool to pull the dent/ding all the way out on one try. You have to plan on several attempts.

Ding King Web Site

Edit to add the Dingking website