Quote Originally Posted by tommyboyrn View Post
very good tip. We could see long isolated lines passing underneath on graph, and since we were anchored I didnt think it was anything "floating" underneath except the possibility of baitfish. But I did not nor have not tried to fish just below those depths. Thanks for theinformation, its much appreciated.
Tom
When sitting still, when a fish come underneath the cone the graph starts drawing a single line, 2 fish 2 lines, etc. It will continue drawing this line as long as the fish remains underneath the cone. You might notice these lines moving up or down as the fish will do. When the line stop you'll know the fish have moved out of the cone. When a group of baitfish moves under the cone it will be a "mass" of lighter gray (on a monochrome graph) usually ranging from a scattered thin mass up to sometimes almost the depth of the water youre in. I have had so many baitfish underneath the boat that they stop the ping from going to the bottom causing your graph to start reading 5' deep or whatever even when you KNOW youre iun 20 or 30' of water.Usually the mass of bait begins small, 3 to 5' thick and grows from there as your lights begin to attract more baitfish. Also, usually the baitfish doesnt show up on the surface first either. They may show up on the graph at 10' deep or more but usually moves up as the night goes on. With cooler waters they may not surface but each trip thru the cone and you may notice a pattern where the baitfish slowly begins coming closer to the top.