RAM Part RAM-108-DU : Connect the strap to the arm of your trolling motor.  The other end has a round mounting base with pre-drilled holes.  This is connected by a metal 8.75" arm.  The trolling motor stabilizer will take every bit of the vibration out of your trolling motor while all the time protecting the head, shaft and mount from damage. A must for any angler with a bow mount trolling motor.  The maximum allowable distance between the mounting surface on the boat and the lowest point of the trolling motor shaft is 12”. Distances shorter than this are compatible.