I do with Humminbird units for demos.
This is a 1198 and transducer on a transom trolling motor bracket/shaft.
It's easier with an internal GPS antenna model.
The issue you may get is RFI if your trolling motor is a variable speed model and the transducer is attached to that along with having the unit power connected to the same battery as the motor.
Humminbird Helix 12 CHIRP SI, 1198c SI, 1198c SI, ONIX 10 SI NT, Helix 7 CHIRP SI GPS G2, SOLIX 12 SI, 360, RC-1