I agree with CrappieHunter68. I would make sure my transducer is mounted horizontal and not at an angle. Just imagine your boat sitting in the water and your transducer at that angle. One other thing to try is make sure your chart speed is close to or the same as your speed. This will give you better detail. Make sure you do not have any blockage on either side of the transducer. Just remember the Side Imaging beams shot directly out the side of the transducer.