Ken, the DSC wiil show up during normal soundings. I
have the sounder on 80 fathom range and shift it to
show the bottom in 300 fathoms. I have the gain on 5.
The DSC will be around 250-350 fathoms during the
day and is concentrated around canyon walls and sea
We often follow this layer onto the sea-mount and
fish at the depth that it touches. There are
usually fish feeding on it and we often get fish
with red shrimps, fang tooth dragons, light fish
and angler fish and long black eels in their mouths.
I use a split screen to show normal and bottom lock.
The normal sounding shows the depth and structure
and confirms the 3D plotter image, and bottom lock
flattens out the bottom to show schools of fish
holding on very steep bottom.