I have a 9.9 Merc 4 stroke on the back of a 21 ft Northwest jet. I have a system called an E.Z troll thats run off a cable that has a clicker that you can take up into the front of the boat. This thing is a huge hassel. You have to be right on top of it at all times. If there is any wind at all it almost impossible to hold the boat in a straight line. Its O.K on a lake with little wind and totally useless in a river