Glad you able to find them and get them to bite. It will make you a better fisherman. For me if I troll over a top & don't see any fish/shad there, I just move on to the next one.
You will spend less time in unproductive water.
The 2nd thing was I thought I was fishing small stumps that turned out to be a huge tree laying on the bottom. Every time I went there the crappie were located in a different part of the tree. SI would show you were you needed to place your marker and fish.
I thought I wanted a career! Turns out I just wanted pay checks!