A durable weighted vest insert to produce a calming effect in users. With this, it becomes possible to freely adjust the stream confluence point of the outboard motors, thereby improving boat driving stability and providing enhanced auto-spanker performance. A power connector is configured to be received within the recess formed in the bottom portion and retained therein when the top portion is aligned with and secured to the bottom portion such that the power connector cannot be removed from the sensor. The application program produces a user interface that enables the agent to indicate when the agent is going on break and the type of break that the agent is taking.