The best thing and hardest thing I ever did was the first time I had a Humminbird 797 SI ( years ago ) was leave all my fishing gear at home and spent the entire day playing with the 797. A good friend of mine helped me with this,,,,Quit trying to figure out what was on the bottom for structure and trying to figure out what I was seeing, instead strictly look for fish and nothing else. Who cares what that thing is if there are no fish around it, what was happening is I was so intent on the object that I did not pay attention to the rest of the screen.

After that I set up my depth finder totally different then what most recommend, as I do not care about a pretty picture I run my scroll speed faster so any fish marks get elongated and makes them easier to see. I will also keep up my enhance menu up at all times so I can adjust from soft to hard bottom or depth changes I never just turn it on and leave the same settings all day. Once I find fish then I will swing back around, slow down scroll speed and figure out why those fish are there.