To avoid drilling holes, I have used a home-brewed setup similar to this kit to pull dents in places I can't reach with a hammer and dolly. I super-glue L-shaped tabs onto the metal and use a small slide hammer or vise grips and a pry bar to lift the dent. A little bit of heat from a propane torch removes the tab once the metal is lifted.

www.ebay.com/itm/315206103060?

Here's another way to do the same thing:

www.ebay.com/itm/275702852395?

Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!