It could be set up like "The Truman Show", we don't have to endanger any crew people, no extras are needed, and best of all you can still control the prisoners. Every season you can change the setting to make it look like its something fresh off of the shelf.
Lab rats in a maze can be controlled; it just takes a little incentive. The same goes for sharks, sure it's a bigger maze, but if they take the bait they are trapped. Make them come to you and that's when you attack, put in a shocking tracking device. While they"re building the much-needed extra space; as the sun cooks their skin like bacon; you still have the upper hand, all without having to suffer in the sweltering heat along with them. In the event that you may need to show the inmates some force torture may need to come into play. Medieval, Russian, and Chinese methods might be the remedy for an out-of-place prisoner. For those who try to escape, if the shock doesn't work, the most logical solution would be to set them in a room with thin walls so that all can hear his endless screams of excruciating agony. No blood is shed in this form, stretching, tearing, ripping, from inside out, the torn, shaken prisoner is just laid out on a simple, yet effective stretching table. No real harm is done but I can assure you they"ll never run again. .
The assault of another prisoner carries even more weight than the first, literally. The prisoner is taken to a thin, clear, plastic room, for easy clean up, where they are met by two guards, a surgeon, and a large, hideous machine. On the top the statement " Do unto others as you would have do unto you," it has rotting wood, and rusting iron, dull and slightly drawn back hooks, for better grip. Once strapped in, a sterile stainless steel mouthpiece is in the prisoner's mouth. First the assault the prisoner bestowed on the other is returned. Then he is doused with a troth of frosty water, a guard streams a shock of intense energy into the prisoners mouthpiece.
