One time at Holiday Valley in NY, I kept hitting the pipe, and riding the lift each time. Well the last time, they had closed the pipe from one of the entrances, not the entrance that I was going through, so I had no idea it was "closed". It was just a big trap! There were a bunch of lame "safety patrollers" waiting at the bottom by the lift for people that went into the pipe (from the side that was clearly not marked as closed). I couldn't believe it. They took my pass, and I was scared because I was an instructor there at the time. If it had been more uphill, I probably would have skied away, those guys can barely ski. When I went to meet with my supervisor the next day about getting my pass back, he basically handed it back to me and was like "yea that was a bunch of bullshit".
I respect closures completely, but if things are going to be closed they need to make it clear! And not just make it a trap.