Keep in mind the cans do move. Not just with the spring ice/high water. Tows, trees, high water and unfortunately boaters can move them a ways.
I’ve taken Jon’s recommendation one step further and have made a ROUTE. Then I use the compass rose on one side of the screen and Gps tracks that also shows my route. The compass rose will tell me if I need to turn left or right to keep me right on track (which is in the middle of the channel.
It’s great for coming home in the dark. It’s freaking awesome in the fog.
So I’m very comfortable navigating in the dark following my electronics but a good captain always uses two forms of navigation and the second form may keep me from hitting a tree or whatever floating down the river.
Since I run at night more then in the day I bought the Lowrance G3 radar system. Best piece of night navigation equipment since the outboard motor. But that’s a whole ‘nother story.