I worked at an amusement park that had two Spy Hunter Sit down machines that were sitting in kind of remote sections of the park. Some kids broke into them by sitting in the seat, putting their backs hard against the back, and putting their feet on the control panel. Once in that position.... push with all your might. The machine flexes right where the seat meets the floor, snaps the game in half, and exposes the coin door.
After that all the machines in those locations got stickers that said money removed daily (even though it in reality it was only once a month )