I was the first one in Erie, PA to use this system to retrieve my anchor and I still use the same technique. The ball should have at least 30 lbs of bouyancy (12" dia) and will slide down the anchor line by use of a large steel ring. Now motor away from the set at a 45 to 90 degree angle keeping an eye on the ball so as not to run over the line. When the ball slides down the line, the anchor frees itself and will be caught at the ball. Now stop the boat and retrieve your anchor and ball easily.

Cheers, DocWet