I saw a video where the guy was explaining the SideView, and I don't know how true it is but he said when using the side view you have to remember - when looking at the sideview, and it is set at 50 feet and you are in 10 feet of water it actually only shows 40 feet to the side. You subtract the depth from the side distance, if that makes any sense. So where you had 23 feet to the side showing and you were in about 8 feet of water, you were actually only seeing to the side about 15 or 16 feet. I started using his rule of thumb setting mine and it has helped me for what ever reason.....
There is a lot to learn with these for sure.....