Those dents really aren't that bad- - - - -I've repaired much worse. The only area that would concern me would be those deep creases- - - -he might have to do a little cutting and patching there. There are no torn spots, or rusted-through places to worry about. A little hammer and dolly work and some metal finishing would make a big difference in how that looks.
Jerry
That is the answer to your question.
What stage are you at now? Did you get the big dent shaped? Are you wanting to do a little dent? As Chuck said, use a big object like a basketball pushed/pounded. For a mostly "pop out" dent, I take stuff like that out to the grass, with soft soil beneath, and use the earth as a dolly. Use rounded off timber or something big so you don't make a bunch of dings.
As far as after that, the smaller dents are worked with curved dollies and hammers. You can hammer with a dolly. At this stage you go REAL SLOW and REAL LIGHT BLOWS. REAL LIGHT BLOWS!!!!!!!!!!!!!!!!!!!......taps at the end. Takes time and feeling the metal as you go, every few hits. Use anything and everything around the property/junk pile/tools that fits the curve. It's only Rocket Science if you are building a Rocket.
