I have seen the ring help beginners, it is worth a shot if they are having problems winding. Some beginners struggle with the ring because they are a bit clumsy with their hands and keep knocking the ring off. Tying a loop at the end of the string is a good alternative, I think I learned that from Dale Oliver.
A ring gets in the way of regenerating (unless you are somebody like Salvador), but they can be fun for bearing play. I made this video a while back trying to open some doors, but this is about as far as I went: