One of the many many features of your fish finder that nobody seems to know anything about is where do you set that sensitivity setting. Well after lots of research here's what I came up with.

Drop a quarter oz jig into the sonar cone under your boat..lets say 10ft down. you should get a steady line across your screen--that will be your Jig---if the line is not visible then increase your sensitivity until you see that...if you have a rather dark thick line then decrease sensitivity. Thats the gest of it...so for us catfishermen we should be able to see a steady line on our display all the way to the bottom from that jig,,,,if its disappearing before you hit bottom then increase the sensitivity just a little.

So what if your in the James with that dang 20mph outgoing tide and a quarter oz jig will be a hundred yards back what do you do? Well to high sensitivity settings will give you a darker screen appearance or a lot of sonar returns and vice versa to low of a setting will provide almost no returns at all. So try to calculate the settings like 8 appears to be to high and 3 looks to be to low then a rough guesstimate of 5 or 6 should be about right.

Now for us catfishermen another interesting note here is the return echo off of a catfish skin is a weaker return than it's scaled buddies,,so leaning on the higher sensitivity side is much better than not enough.
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