Yep, it's solid as a rock. I bought a 6"x18" sheet of 0.025" aluminum at Ace Hardware and cut three strips about 1/2" wide that slid right into the slots. Bent them up and then warped to fit to the ring. I drilled a 1/8" hole through the strip and the ring, then cut off the rest of the strip above the hole, then used a pop rivet to attach.
I've done a couple of others by drilling into the leg socket and attaching the tabs on newer style rings with screws, but this is a MUCH better method all around.