took my boat out for the opening day of trout season here in PA. When I went to turn the trolling motor, it wouldn't move at all. It still turned on, just wouldn't rotate. Was able to still able to steer with big motor. Any idea what is wrong and how to fix it?

Since it's cable steering, I guess you need to check if the cable is froze up or if the pivot in the motor is (head or shaft bearing).   Might try applying some pressure back and forth on the motor and see if you can get it to move.  

Just remember, that's a small gear on a rack inside that head, and I said "some" pressure, don't go gilla gorilla on it.   Might have to take the top off the head and take the rack and pinion out to see where it's stuck.

 

Just make sure when putting it back in, you are center of the rack so you have equal swing in both directions.