I got the pops a dent tool from my local oarts store. $19.95, no shipping involved. I had a Cougar that got hailed on. It had dozens of littly debts about the diameter of a quarter. The tool had a section cup about that same diameter. Unfortunately it did not work. The dents were too small in relationship to the suction cup which was glued to the dents I tried to pop. I also tried it using ?hot melt glue?. That didn’t do any better.
On the other hand, I have had some pretty fair luck pulling larger circular dents with a big 4" rubber suction cup. It is not one of those little plastic jobs, but was originally made for carrying sheets of glass. It has an aluminum frame.