Bow mounted trolling motor

[Pat from Maine]

I've just bought a 2002 Expedition 16 and had a new Minn Kota trolling motor installed on the bow. The dealer gave me a free upgrade to a motor that has a preinstalled transducer in it. The boat has an Eagle 480 that accomidates 2 transducers so I just need to run a patch cable from the motor to the fish finder. Does anybody know how much of a job it is to run the cable under the deck from the bow back to the console? This is a double console boat with a walk thru windshield. BTW, great boat, fast (came with a Honda 90) wide and stable.