Get on and snuggle into your spot, then pretend to fall asleep, perhaps even playing it up with a little snoring. See if anyone wakes you up as you approach the unload. If you're not itchin' too hard for your next run, it could be funny to just stay on as it goes around. All the people who rode with you would see you still sleeping, riding the lift back down.
They usually have a bar linked to an off switch at the end of where the lift goes around at the top, which is hit by anyone's legs if they get stuck on it.
My brother did that once and it was great because I had just got off the lift and it was crowded, so everyone had gone down and the lift had stopped. So we had the entire run to ourselves without anyone else in the way!
If it's ever crowded, just pretend you or one of your friends is new to snowboarding and have them stay on the lift at the exit ramp. That is, if it does have a stop bar.