Owner of a Beneteau 305, I am looking to change the old depth finder by an AIRMAR DT800. This smart sensor is NMEA 0183 and compatible with my new GPS Standard horizon CP180. I have 3 choices for this sensor 0°, 12° or 20° tilt to compensate the deadrise. The sensor is located behind the quill slightly on portside. At this location the hull is almost flat. I believe the 0° should work as it will work in a range of 0° to 7°. Is anybody has an experience with this type of sensor. Thanks for your help