Better off going with a 'Dent Wizard' service. The gut uses rods and benders to work the dent out. Worked very well for me....had a Honda Civic with what must have been acid dipped fenders!!! Even if you leaned on the fender, it would bend!!! I used dent king to get a plam sized dent out (wasn't too visible to begin with, but it was a show car). The dent king worked like a charm. Couldn't even tell there was a dent there and I paid him $55 to do the job!!!
Dent Kings may get a majority of the dent out, but it leaves you a note saying there was a dent there!!
Sorry noy exactly a review of dent king, but I haven't heard anything good about it.