I have seen this discussed many times, but I haven't seen a really good solution. The Garmin unit (545s) I am thinking of buying comes with the stern mount transducer for depth and temperature.
So far all I have seen on this site is either mounting it inside the boat and shoot through the hull (fine, but no temperature), or one guy put it through the cart scupper hole. The cart scupper hole doesn't seem like a "clean" installation, and I suspect if I dragged the AI onto the dock the wrong way, I could shear it clean off.
I really want the temperature feature.
The only other solution I can think of is to actually drill a hole in the bottom of the AI and install the transducer the normal marine way.
Is there anything else I should consdier? Where else would the transom mount transducer work on the AI?