On the spot lock, if the GPS is having difficulties tracking, sometimes it will signal this with a trill sound. If it does this more than once, you can bring the motor up to the horizontal position and then back to the water and that will reset it. It the cord gets wrapped around once or twice and limits the movement, it will also make a trill sound and spot responding until the pressure is taken off the unit by unwinding the cord.
Capt. Craig Copeland
2013 Nautic Star 2110 Shallow Bay Boat
Humminbird HELIX 12 CHIRP MEGA SI GPS G2N
Nautic Star Boats Pro Staff (nauticstarboats.com)
Redneck Fish'n Jigs Pro Staff (redneckfishn.com)