Gotta agree... turn everything off and go to manual...

I don't just use the FF to watch bottom contour and the ball(s)... I can tell the type of bait by shape of the formation. Bottom hardness is another key feature... especially for crabbing.

As far as sensitivity... try cranking it down a few notches.. With the sensitivity cranked up, more than likely your picking up things close to the edge or outside of the transducer's cone.

Downriggin'
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"If you are not scratchin bottom, you ain't fishing deep enough!" -DR

Puget Sound Anglers, Gig Harbor Chapter