My first unit was for ice fishing, lowrance elite 4x
I had a horrible time setting it up at first. It was Terry that helped me dial it in(thanks again Terry!)
Turns out, most my difficulties came because I was setting it up in heavy current, not the easiest thing to new for a electronics newbie.
Then I went out on the lake and set it up and holy crap, night and day difference! Hammered walleye on rainy lake with my buddy Stan. I could see exactly what was going on in the water column and I caught alot more fish because of it!
One thing I love, sitting on a school of fish, is watching how they react to your lures. That in turn helped me refine a few "new to me" fishing styles that turned out to be incredibly effective for walleye and crappie.
Now it's hard to go without. It's just an adult video game