Last Spring we had a large hail storm pass thru Yukon. Luckily, I had moved the car towards home and only got some minor spots. The neighbor next to my dad is a PDR guy. I watched him do my car in dad's garage, some awesome work, I'll say. For the roof dent he used of all things - hot glue! With this special little gun and these "pop rivet" flat head pads. Heat the glue, stick in the pad, attach the gun and gently pull up the dent. Took a couple of times per dent, slow and easy, checking all the while. When he was done the only spots that were still dented were the black strips next to the side glass.