Ok "exitspeed", and anyone else this may benefit.
-Hydraulic Porta Power-
sample pic
From $50 to $500 and worth every penny.
Its a hand-pumped hydraulic system with different attachments, from extending rams too lcamping jaws.
These things are rated in the "tons", so can manipulate body panels with ease.
Take your corner panel for example.
Instead of 100 hits from a body hammer, put this behind the panel and will slowly push the dent out.
Using a block of 2x4 will help distribute the force over the entire area.
For your roof dings, use the rubber ball add-on(see arrow) while applying pressure on the top of the roof.(special hint: a block of wood with a hole drilled out the size of the ding on the topside)
And now Im gonna release this for premies only......................................
If you get a PortaPower and want to stretch or flare your fenders?
Pipe welded to a cresent shape piece of metal with the same shaped piece of wood screwed the front.
You should get the picture.
Evenly pushed and flared fenders in about 10 minutes each............. with no body damage.