788ci depth problems

I updated 4.096 but still double bottoms in shallow water 8.5 ft. and below.Trans. in dualbeam.NEED HELP. THANKS CAPP

CAPP... Mine does the same thing....and here I thought it was me and operator error. No matter what setting the sensitvity is on, or which beam setting I use in shallow water I have two depth lines and it drives me crazy to watch it bounce back and forth. Have to ask wife to be what the back depthfinder (a 300 series), is reading.

CAPP,
If you are only running one sonar unit at a time I would try the following menu changes to see if they help at all:
Set the water Type to Deep Salt water
Select a higher Surface Clutter number setting (up to the max)
If this does not help than I would contact the Humminbird Customer resource folks. They may want you to send in a sonar recording so that the Engineers can look at it.


Catch&Crisco,
Try resetting the unit back to the factory settings and turning off the rear 300 series unit. If that clears it up than try setting the Noise Filter menu to a higher setting with the 300 series unit turned on to see if it still happens. If it does, increase the Noise Filter setting. If you have it maxed out than try manually selecting a different Lower Range setting than what the 300 series unit is using.

If this happens even with the 300 series unit turned off I would try the same things I suggested for CAPP.

Do you all have the switchfire turned on?

Greg will try what you recommended.... I do have the 788ci maxed out on the noise filter settings ..woohoo another excuse to get back on the water..."honey I have to try out the new settings on the depth finder...factory guy told me too"

Be sure to check the SwitchFire menu setting as Downwind suggested. In shallow water you should have it set to the Clear Mode setting.
Good catch there Downwind - I forgot all about that!

What is the current software version on the 385ci? I'm showing 4.670

Downwind,
See your seperate post on this.