Oh, yes, McGrath. I often played "sandlot" football in my misspent youth. Usually it was "touch" (you have to touch the ball carrier in the back) rather than "tackle" -- since we played it sans pads, helmets, and so on. "Flag football" is played like "touch" but one or two peices of cloth (the "flags") are carried in the back pockets and one is yanked out to indicate a "tackle".

Even so, bones were broken.