[Grounded63]

If the rest of the skin is in good shape. And, you don't need to replace any of the bottom structure. I would cut out a section of the inner structure, under the door panel to gain access. Pretty much minimal weld clean up, is needed that way. If the dings are somewhat minor. You can try wedging ( with tension ) a dolly between the inner structure and outer skin. Then hammer or slap/spoon to raise them.