I use the tracking every trip and have some tracks for emergencies. The process is very simple and easy to use. The hardest part is labeling the track to remember what it does. Keep in mind it actually records waypoints and goes from point to point. It will record every little twist and turn so a little trick I use to get a straight line is to pause the recording and start it up again. The track between the pause and the restart will be a straight line, be sure you do not need to avoid anything as it will take you right thru it. Reversing the track is as easy, you just select to go to the start or the end and that controls which direction. Another thing I do is use two tracks to make the loop or the turn around. As I approach the end of the main track I end it and give it the start of the second track. The boat will straight line to the second track and follow it, then end it and pick the first track. Using this method if trolling you make a smooth turn around or connect the two tracks. A third track can be programmed so both ends of the main track can be smoothly joined without tangling your lines.
The emergency track is to get me back to the dock if it gets dark or a medical emergency, of course this only works using the trolling motor. I have used the trolling motor to steer while using the back motor to provide most of the power. I'm on all electric reservoirs so this is not a problem, with a gas motor pushing it would probably not work.
Tracking is not contour, contour goes by the depths on the map and hold to that depth line. The system also supports offset so if you are casting into say the 10 ' contour an off set can be called for that will keep you off that contour by your preferred distance either side of the line.
To date I have not been able to connect a contour with a programmed track, but am still trying.