I was trolling last Saturday & I heard a clicking noise. My hearing aint what it used to be so I thought no way. Sho nuff it was my transducer pulse. I have two on the same unit so I switched it to the back and could still hear it. My wife says she always hears it in the back of the boat. Anyone else hear this pulse? And if so, no wonder these tournament guys turn there units off when they find fish.