Im not a professional on transducer install but, what transducer did you put on? and you want to try to install as far from any disturbance as you can. such as the back of the boat as far from a rigger cable or prop wash as possible. or if you are doing a thru hull type you would mount that ahead of your motors, such as in the floor under the cuddy part of the cabin that was it is getting undisturbed water to read from. maybe have a front bilge area that is accessible?