Tougher on your hands, too. The photo above is from Hudson Beach, New York City, last weekend. The one below is from Santa Monica, Sept. 2003. Getting older, just so you know, does not make this any easier.
Still, I wish there were more of these things around. There are only two in the country, apparently. The ones I used to play on in Santa Monica are known locally as the "traveling rings," while they're "swing-a-rings" in NYC.