I've only ever been stuck on the Mummy and JP. I've been stuck right before the t-rex's appearance twice at the drop and we're just sitting there with the climactic music and the red lights flashing everywhere and smoke and mist lurking near the boat. The first time it happened, I thought the ride actually stopped and we'd have to get out or something. The robotic woman's voice counted down and everything, but we just sat there and the t-rex never came out. There weren't any boats behind us to my knowledge, either. My sister was pretty freaked out, but she just doesn't enjoy the ride in general (we usually get seated with "larger" guests in our row, and the safety bar doesn't come down all the way for her). Eventually we got moved forward, the t-rex came out, but the music never came on again. Kinda odd.