rnvinc
If you look at the 2D trackplot it looks like a bunches of little circles, it is actually the route of your boat, it shows where you are in the recordings. You can tell if you are going in a straight line or making turns. When making turns the sideimaging is somewhat distorted. For example I found a boat under water, when going over it on a straight coarse the boat has good detail. If I make a turn over the boat it will be curved and elongated.
I like keeping this on the bottom of my screen to observe where I am while viewing, normally I'll start viewing with 3 screens SideImaging, 2d and 2d trackplot, and kick the speed up and then slow it down on areas of interest.
George