zanzibarro Posted November 1, 2013 Share Posted November 1, 2013 I think it would be very informative to have a thread dedicated to the study of basic 2D sonar (or switch fire or whatever view it's called). It would be great if people couple post screen captures as a learning tool. Advanced lessons in terms of what we are actually seeing on screen shots. What I mean by that, or what type of screen captures I would love to see are: Scale and speed: do you have a screen shot of a school of walleye in 25 feet? And what was boat speed when the screen capture was taken? Anyone have a screen shot of a school, whether large or small, in 35 feet? I guess what I am getting at here is I want to know what some of the veteran spoon pluggers out there need to see on the graph before they sink a minnow. If you're graphing a mid basin reef at 3.5 mph in 30 feet the walleye marks are going to look a hell of a lot different than when slowly drifting In 20 feet, right? What do the marks look like can you show us?I have a few screen shots on file I can post tmr to get thread going. Quote Link to comment Share on other sites More sharing options...
TruthWalleyes Posted November 1, 2013 Share Posted November 1, 2013 BBC BOARDS - Humminbird Image Intrepretation.All your looking for is already there. Quote Link to comment Share on other sites More sharing options...
zanzibarro Posted November 1, 2013 Author Share Posted November 1, 2013 That is an impressive resource Truth. It does have a Walleye thread dedicated to answering the same questions I pose above, but contains no uploads/shots. Mostly Bass people catering to the South.So if anyone has any MN Walleye captures I would still like to see em. Quote Link to comment Share on other sites More sharing options...
reddog Posted November 2, 2013 Share Posted November 2, 2013 Not many 2D, but lots of SI shots of wall eyes. Pm me if you want a link. Quote Link to comment Share on other sites More sharing options...
TruthWalleyes Posted November 2, 2013 Share Posted November 2, 2013 Reddog would be a great resource. Only way to clearly identify fish on your 2d is to catch them. 2d lies all the time. Branch can look like a school... Etc. Combination on so and 2d and you can dissect about anything. Quote Link to comment Share on other sites More sharing options...
JohnMickish Posted November 3, 2013 Share Posted November 3, 2013 I think its a great idea. I'll see if I can get a sticky on a thread To keep it on top. Give me a couple days. Quote Link to comment Share on other sites More sharing options...
TruthWalleyes Posted November 3, 2013 Share Posted November 3, 2013 The question about screen and boat speed... You should match them.I.e. chart speed 3 boat speed 3Faster chart than boat, fish stretched. Look bigger than actual. Boat faster than chart. Fish shrunk on chart.Adjust your sensitivity to get the amount of clutter you want. Quote Link to comment Share on other sites More sharing options...
zanzibarro Posted November 4, 2013 Author Share Posted November 4, 2013 As Truth alleudes to above a margin of error will always exist when identifying species. Just post whatever you have in which you're reasonably sure. I contend the marks below are Walleye. We caught a few Walleye at time of this shot. They were eaters between 13-17 inches. That is what I believe we are seeing here. As to the tiny marks surrounding, maybe baitfish and/or some miniscule Walleye? This is Rainy Lake fyi. An 'Atta Boy' to the fish person to show me a school of Walleye (perceived/cuaght) in deeper water with a boat speed of 3.0 mph or above:). Quote Link to comment Share on other sites More sharing options...
reddog Posted November 5, 2013 Share Posted November 5, 2013 If your on some kind of structure change in depth,(slope) with walleyes being the bottom hugging beasts they are, plan on them being buried in the 2D dead zone. Quote Link to comment Share on other sites More sharing options...
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