I have a FCV 1100l, and use it for deep drop bottom fishing, typically up to 180 fathoms. I have a 50/200 in-hull tank mounted 1kw transducer. There's a lot of other people fishing the same areas as I do, with mostly 50K transducers, and I get "blinded" from their signals. I have tried shifting the freq, on the low side, but to limited success. Is there a transducer that has a narrow beam, off from 50 khz, that can be used with the 1100, 2 or 3 kw? Or any suggestions on what to do so I don't get "blinded" by everyone else's fish finders.