Burk, I just purchased a grip glide trolling motor a couple of weeks ago. I rigged the transducer cable thru the coil and then down thru the grip glide handle. I taped/wire tyed the cable up by the head and then down lower on the shaft. I have had the boat out several times and the cable has never got pinched nor have I had any other problems.
I will try to post pictures tonight so you can see.
Hope this helps.
Bob Griffith
Ice Team Power Stick
Clam Corp. Pro Staff
Keystone Crappie Association member