They Had A Rotating Stage
A particular stage was designed for Woodstock, and the hope was that it would cut down the time between acts considerably. The stage would rotate like a turntable, and it would allow one band to get ready as another band was still performing.
However, it didn’t work because the weight of the equipment was too much, and the casters broke almost immediately. The organizers had to revert back to the original way of tearing down and setting up, and because of this, they were constantly behind schedule.