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<blockquote data-quote="WTM" data-source="post: 5182396" data-attributes="member: 6230"><p>depth, size of fish and frequency. looks like a mixed school to me. those strung out along the bottom is what largemouth look like when they are feeding. largemouth never really "stack" even when they are suspended. a couple of bass will push bait from top down to a hard bottom where the rest of the school will pick them off.</p><p></p><p>the stacked school look like crappie, possibly white bass if you saw any streakers on the screen. that small school to the far right by the rock pile look like bluegill.</p><p></p><p>but you never know unless you catch some and if you continue to display your GPS coordinates on an open forum so will everyone else.</p><p></p><p>if you run a dual screen with 455/800khz you will see the difference in how frequency will affect the size of your returns. the higher the freq the more faint the fish returns will be but you will gain structure and cover detail. garmin designed the gt52 to show fish returns really well but it lacks some of the finer detail, where as a gt30 was designed for greater detail but less on fish returns.</p><p></p><p>also remember with down imaging, that image could possibly be not directly under your boat. at 13ft and a 50 degree beam at 455khz your scanning a swath of water 12 feet wide. 6 feet to the left and 6 feet to the right of your transducer. at 800khz it would be 6.5 ft wide.</p><p></p><p>the 2d high wide chirp will give you greater accuracy as far as placing a waypoint.</p></blockquote><p></p>
[QUOTE="WTM, post: 5182396, member: 6230"] depth, size of fish and frequency. looks like a mixed school to me. those strung out along the bottom is what largemouth look like when they are feeding. largemouth never really "stack" even when they are suspended. a couple of bass will push bait from top down to a hard bottom where the rest of the school will pick them off. the stacked school look like crappie, possibly white bass if you saw any streakers on the screen. that small school to the far right by the rock pile look like bluegill. but you never know unless you catch some and if you continue to display your GPS coordinates on an open forum so will everyone else. if you run a dual screen with 455/800khz you will see the difference in how frequency will affect the size of your returns. the higher the freq the more faint the fish returns will be but you will gain structure and cover detail. garmin designed the gt52 to show fish returns really well but it lacks some of the finer detail, where as a gt30 was designed for greater detail but less on fish returns. also remember with down imaging, that image could possibly be not directly under your boat. at 13ft and a 50 degree beam at 455khz your scanning a swath of water 12 feet wide. 6 feet to the left and 6 feet to the right of your transducer. at 800khz it would be 6.5 ft wide. the 2d high wide chirp will give you greater accuracy as far as placing a waypoint. [/QUOTE]
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