I vote for the semi too.
My son and I have been stunned to find that many our team mates for the last several years have never picked up a pump before. A few have not even handled a pump shotgun before, so the whole pump action thing was a mystery. Things we take for granted (like oil for regulators and pump actions) can still be foreign to even the "experienced" players that haven't dealt with it.
Having a pump around for anyone interested is good for entertainment though. And if the "crazy" guys get too busy, they get the pumps next.