When I cleanup stumps I use a BMG rake and clamshells or a smooth bucket. I recently did a 6'8" pin oak stump that took about an hour to scoop up the chips with the bucket, its a small bucket. It took 44 scoops to load it all in a dump trailer.
About two days before I had time to clean it up, I staged it all with the grapple rake, spent maybe 30-45 mins cleaning the yard and driveway and lining up all of the chips within reach of the driveway as we were expecting rain.
I found my biggest hurdle was the dump trailer. With the rain that had come down, the chips and dirt stuck to the trailer and wouldn't dump. Not to mention I may have overloaded the hoist by filling the 14' trailer. Logs dump great out of this trailer, but it doesn't tilt enough for stump grindings and the replacement topsoil to slide out.