I have heard about this for years, never tried it myself, too damned worried that a bunch of meat will rip off with the hide, just like it does when you skin a deer with your knife and pull down on the hide from time to time to move things along........but yes I do know people who do this and if 762nato does it you can take that to the bank.
The golf ball is just an anchor point to hang on to the hide, you bunch the hide around that ball, tie it off securely and tie the rope/winch/whatever to that. It is like a "handle" to help you pull the hide off, nothing magic.
Maybe this year if we have a LOT of deer, we might try this....but I doubt it. We like to hang our deer with the hide on until we butcher it, unless it is VERY warm, in which case it is hide off right now, and butcher it right now too. More blood in the meat, not as nice, but it is me eating the meat not the maggots.....
Doug