Lowrance Transducer Installation Manual page 12

NOTE: A transducer that is tilted too far in either direction will not perform well, missing targets,
and/or losing the bottom at speed.
If performance does not improve with tilting, try adjusting the height of the transducer relative to the
transom of the boat. If the transducer is too high it may be seeing cavitation caused by the trailing edge
of the transom.
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