I plan on mounting my transducer on my trolling motor that will be mounted on the front or back of my two man boat depending on wether or not someone is with me.  My question is:  does mounting this way always lead to interference and is one end better than the other for motor/transducer positioning.  I would think the front would create less interference but I don't know.  Any suggestions?

I assume the trolling motor is going to be the only motor on the boat. If it were me I would put it on the front of the boat. It's easier to control the boat while fishing. You can buy brackets that are made to mount X-ducers to trolling motors. Most of the depthfinders now have a trolling motor x-ducer that comes ready to mount. You can call them & most will swap out the one that came with the unit for the trolling motor one. Hope this helped. Oops, you should no interference on either end of the boat.