O'Rattlecan
Redneck Prognosticator
Maybe you can get as much of the filler out as possible and knock them out most of the way with a dolly. If it's still not quite smooth, use just a small dab of filler. I don't consider it cheating but a lot of other guys do... It could be from wear/tear on the truck. My dents are along the bed rail and from transportation of the bed.
Ryan
Ryan