New-to-me 19' WT needs an electronics upgrade. Have been doing some research and I am a bit confused by all of the available options, transducers, down-scan, side-scan, structure-scan, total-scan, etc. It's a bit daunting. I am curious what everyone is using for a sonar, plotter, etc. Are you satisfied with it? Which features do you find useful and not so useful? Any regrets or problems with the unit you are using? I intend to use the boat for everything from bluegills with the kids to salmon and trout on the big water. As always, I appreciate the insight.