Does anyone know what if any actual difference there is between the Humminbird XM 9 20 MSI T MEGA Transom Mount Transducer and the Humminbird XTM 9 20 MSI T MEGA Transducer? I understand that the mounts for both will be different (one for the transom and the other for under a trolling motor, but the actual transducer itself from all I can tell seems to be exactly the same? Am I incorrect in this thought?
Thanks,
Nate