Well I don't know anything about the sonar that you have as I have never owned one like you have but as far as the transducer I know that it is a simpler job to put the transducer on the trolling motor than to mount on the transom. As for using two transducers and this would be just my thinking. The price of a switch and another transducer would be as high or not higher than buying another whole sonar unit. Weather a cheap new sonar or a good nice used sonar and they usually come with the transducers. That way I would have two units with one on the trolling motor up front and the other transducer mounted on the transom for one on console or just a second one on the boat.