I use a Loadhandler as well. The difficulty that I've found is that the wheel wells keep it from unloading well. I haven't gotten around to boxing around the cab-end of the bed to avoid this bottleneck.
Because the Loadhandler/ tailgate (Loadhandlers work the tailgate hard.) can only handle so much, what I've found to work well to avoid pitchfork unloading is to layer tarps in with the chips. Two guys can pull off each layer of tarp/chips with relative speed and ease. Sometimes rolling the tarp from the cab-end toward the tailgate works well if the drag is too difficult. A chip slope downward toward the tailgate will help as well (which naturally happens somewhat, and can be quickly shaped as the tarps are layered.
Nothing compared to a dump bed, but as a stepping stone, I think its good.