Thursday, October 27, 2011

Lowrance HDS Pictures

Anthony and myself went out yesterday morning looking to catch some big Gizzards to use as bait today. Anthony was going to give me a break throwing the net so I got behind the wheel and searched for areas that were holding bait. The bottom green screen was taken off of an HDS-10 which was programmed to side scan on an 80 foot scale [the 20, 40, 60 and 80 on the scale represents feet out to the right and left side of the boat, we are looking at a total of 160 wide area]. We were in 23 feet of water and came upon a broken up school of bait. The boat is currently at the top of the picture in the 0 range, we are looking at scattered bait [small dashes] increasingly getting denser as we travel forward [The screen travels top to bottom, the further down the page you look the further behind the boat the picture shows]. I had Anthony throw the net when I took this picture resulting in catching about a dozen 8 to 10 inch Gizzards. The middle screen is showing 3 different screens, the right screen is down scan, the middle screen is regular sonar and the left screen in bottom lock which is showing the bottom 10 feet of water zoomed in 3x, the other 2 screens are set to a scale of 0 to 40 feet deep. On this screen you see clearly on down scan 4 or 5 Stripers located about 30 feet deep attacking the Gizzards on the edge of the school of bait [Stripers are the longer streaks]. The middle part of the screen shows the Stripers again as longer arches and the left screen is zoomed in on the whole mess. The upper screen picture shows 2 screens, the left screen is traditional sonar and the right screen is Structure Scan set on Down scan. These screens move right to left, history is moving to the left. It is clear to see that we are on a school of Big Gizzards with a few Stripers on the lower left edge of the school. I was slowing down as I took the picture so the Gizz are showing up as smaller dashes on the down scan at about 4 mph and when the boat gets to about 1 mph they start to arch toward the top right of the page nearer to the transducer because the boat has slowed down to the point where the bait stays in the picture longer. If I were running at a speed of 30 mph the school would show up as a large cloud of bait packed so tight you would not be able to see any individual baits beside the school. Needless to say we caught plenty of Gizzards this morning which resulted in a cooler full of fish after a couple hours of fishing.

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