Quad. They were three (I assumed they were together) and I was the only snowboarder. I was starting out and getting off the lift on a tight situation was still not 100% for me, so I didn't want to take them out. I still don't like packed quads. High speed quads are better since they slow down on exit, but IIRC this one was a single speed. Also, on a packed quad I have to keep my leg twisted during the ride so that I don't hit their skis with my board. To avoid that, I always ride all the way to the right.
tl;dr: I didn't want to ride a packed lift and risk wiping out on exit.
EDIT: Not tax deductible.