Three and a half hours after I started, 22 tons of stone are gone. It was enough to fill in all the washed out areas and put a 1 inch layer on about 20% of the ring.
The method which seemed to work the best, which several of you recommended, was to dump the bucket while backing up. Then move forward to where I started, lower the bucket, put it in float and back drag. I had all the tractor lights on by the time I finished. If it doesn't rain tomorrow, I'll do some more smoothing with the FEL and also pull the drag harrow over it.