Okay, so here's what I do: First, I get a catapult, and load it with sharks. Then I pull the catapult back into firing position. Once in firing position, I bolt the bottom of the box to the ground, and I bolt the top to a bracket that is tied to the catapult in a way that when I launch the catapult, the top of the box is ripped off, while the rest of the box remains stationary. Also, I may have killed someone by launching a shark at them with a catapult.