Welcome to the forums. You can use a suction cup, or, if the dent isn't deep, just leave it alone. Believe it or not, many of those kind of dents will work themselves out over a period of time, simply heating and cooling in the Sun. We got a dent in one of our trailer's segments from a big-rig blowout (THAT was a white-knuckle experience), and after a year, you could just barely see a blemish.
Meddle not in the affairs of dragons, for you are crunchy, and taste good with ketchup.