I've done jelqs with a ring. Did nothing for me.
When I was concentrating on girth, edging with a ring was done repeatedly throughout the day, and I had a night routine that had a lot of bends, which I tried to spread along the shaft, with a warm down of edging with a ring. I gained an inch in 3 months.
I've also used it with just
bathmate warm downs and seen further gains. Although I was really aiming for cementing, the exercise is extremely effective. Honestly, just try it. If for no other reason, because you might as well if you're watching �naked people movies� or however you do. It definitely has a lot of synergy with other girth work because it does capitalize on pushing it all out.