If you search YouTube for installing LSS1, or installing sonar transducer there are also many video showing correct transducer placement on the boat. One thing they all talk about is leveling the transducer so is parallel to the transom.. a tip someone gave me was to visualize your boat on plane with you in it and set the angle of the transducer so is parallel to the transom . Maybe the tip of transducer farthest from the boat(opposite end of where it mounts to boat is too far tilted down..