tinker with from time to time — Sensitivity.
Sensitivity controls the unit's ability to pick up echoes. If you want to
see more detail, try increasing the sensitivity. There are times when
too much clutter appears on the screen. Decreasing sensitivity will re-
duce the clutter and show the strongest fish echoes — if fish are pre-
sent. As you change the sensitivity setting, you can see the difference
on the chart as it scrolls.