Having someone consistently wait for something to happen is mind numbing. A tower with a person in it too watch over the compound wont work(gonna have to trust me on this one). Camera system with 2-3 people monitoring it is the best, they can sit, talk with each other BS(keeping each other awake), and when a alarm triggers which will mostly likely be a small animal they will see it. If its a person they see breaking in, they notify the police right down the street. Done good game.