Just had to throw my two cents in. I hung on mostly in Kelly Park and Melet Park, we called it Mellow Park (Remember how kids like to rename stuff) they were both in Brooklyn, Midwood, Sheepshead Bay and Ave U. area. Anyway, it was rubber matts under the swings, slides and monkey bars, the hardest damn rubber I have ever felt. Laid right on top of the CMent. Only thing it did was cut down on how bad your knees got skinned. Only helped a little cause you could still get bloody. We used to do the flying acts off the top arch of the swing, 20 feet high on to a fence, just like spider man, which is what we called it. Crazy Eddies were when you would pop the swing from under foot and the seat would swing over the bar holding it… Loved doing that one, less chance of being hurt like when you would do a “Spider-Man” I miss the old swings. Don’t see any steel cover swings anymore. The are all those rubber ones that pinch your ass in the seat. No wonder kids stay home and play video games. Playgrounds are lacking in Play these days. Man am I old.