Mercury - Thruster Control Kit for Joystick Piloting Control System 98-8M0173980. OverviewThis thruster control kit is the core piece that lets a single-engine pontoon run Joystick Piloting the way it's meant to. It ties the thruster into the system so the boat can slide sideways, pivot, and ease into tight spots without a lot of wheel work. The response feels steady and predictable, even when the wind gets pushy. Once installed, big pontoons handle more like small boats at slow speeds.. Key Fea