In one embodiment, a control device for a trim tab of a boat includes a plurality of stabilizers, one of each provided on each side of the boat, and a joystick. The stabilizers include blades and a control actuator for each blade, which determines the regulation of the angle of each blade in respect of a plane identifying the transom of the boat. The joystick is connected to a control circuit, which generates a command signal based on a movement of the joystick and coordinates the position of each of the stabilizers, thereby causing the bow of the boat to move in the same direction as the joystick.