The present system comprises an apparatus and a process for continuously dispersing fine particles in a liquid. One example method includes receiving, via a programmer for an electrical stimulator, user input indicating a target stimulation zone, and controlling the electrical stimulator to transition electrical stimulation from an initial stimulation zone to the target stimulation zone via one or more intermediate stimulation zones. The handle discourages the hunter from using the scope as a handle. The apparatus advantageously permits a wide variety of equipment or devices to be adjustably attached to the hull, and provides improved adjustability, maintainability, integrity, reliability, and overall improved mission performance. The install time interval in the normal operating environment is estimated based on the current value of the timing parameters and the install time calculation expression.