I actually bought a bootleg of that concert on DVD for dad a couple years ago, he was ecstatic watching that all over again ( think its all on Youtube now actually). He always told me about it saying it was like seeing an ocean of people, no beginning or end in sight.
The most screwed up thing he said he witnessed was a group of Hell's Angels were kinda posted up near this fencing near him and his buddies, and the Angels began hurling beer bottles and cans at people who were up on other people's shoulders, knocking them out because they couldnt see the stage. Pretty rough lol