A method, apparatus and system for controlling positioning of an agricultural implement is disclosed. The agricultural implement is mounted on a propulsion unit having a positioning system. A position signal is received from a position sensor representing a position of the agricultural implement relative to the ground, and while a difference between the position and a desired position is greater than a threshold difference, a controller produces and transmits an output signal having a control state that alternates successively between an active time during which the output signal causes the positioning system to move the agricultural implement towards the desired position, and an inactive time during which the output signal causes the positioning system to discontinue movement. The respective times are based on a positioning response time and are operable to permit the agricultural implement to settle in a non-transient position during the inactive time while receiving the position signal.
