Thanks for reply Jo.
Do you run your gain at highest level bascically cluttering up screen alot in order to find this layer or will it show up during your normal sounding for fish?
During the day will it only be in the bottom 150fathoms? When you say it’s seen as a ribbon above the bottom you follow that ribbon along it till it’s closer to the bottom is that right?
With bottom lock because it flattens out the bottom, do you find that you miss structure or do you you just use the bottom lock when searching for this layer and fish?