So I'm sorting with the ryedale and I have been hand sorting the copper to pull out the ugly abes. I just took 2 square pieces of plexiglass and put velcro around 3 edges. Throw a bunch of copper on one piece pull all the green that I can see...then put the 2nd piece on top (held in place by the velcro) and flip. Pull off the top piece and pull any green copper. Then the remaining clean copper can be poured into the bucket.
It's a lot faster than grabbing fistfuls at a time and looking at 1 coin at a time.