Nearly all fishing boats have sonar. Would it be possible to put something on the cables that emit a sound that makes an obvious "keep away" on the sonar? Cou

Nearly all fishing boats have sonar. Would it be possible to put something on the cables that emit a sound that makes an obvious "keep away" on the sonar? Could they also be geo-tagged on GPS? GPS devices could give similar warnings that are given to pilots when they are near a TFR.