Posted 3/20/2008 6:54 PM (#67343 - in reply to #67286) Subject: RE: Aqua-Vu Under Water Mystery #2
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Posts: 3899
Interesting snapshot. Bumps look to be consistant with the rest of the bottom. I don't see them in the second echo, either. Is that significant? I am going to say it's some kind of bottom feeder, like a Lawyer, or Politician. No, wait.
Seriously, I'm wondering if this may be a river channel, and the bumps are maybe catfish or some other fish, belly to the bottom.
Posted 3/20/2008 7:06 PM (#67344 - in reply to #67286) Subject: RE: Aqua-Vu Under Water Mystery #2
Member
Posts: 3899
Interesting snapshot. Bumps look to be consistant with the rest of the bottom. I don't see them in the second echo, either. Is that significant? I am going to say it's some kind of bottom feeder, like a Lawyer, or Politician. No, wait.
Seriously, I'm wondering if this may be a river channel, and the bumps are maybe catfish or some other fish, belly to the bottom.
Perhaps instead of wild guesses, pointed quwations can be asked, and answerred, guiding us to the correct answer?
Posted 3/20/2008 9:35 PM (#67350 - in reply to #67286) Subject: RE: Aqua-Vu Under Water Mystery #2
Member
Posts: 96
Location: DeForest, WI
Shep your observation of composition prompted me to think it was a wash spot. Maybe a channel turn where a barge put down thrust a ways down and washed the sand/silt into concentrated piles. Not roids haha.
Frogman
Posted 3/20/2008 10:18 PM (#67352 - in reply to #67286) Subject: RE: Aqua-Vu Under Water Mystery #2
They seem to be symmetrical yet broken apart. The two ends of a tree maybe?
Frogman
ToddM
Posted 3/20/2008 11:39 PM (#67354 - in reply to #67286) Subject: RE: Aqua-Vu Under Water Mystery #2
Dang it I guessed old wooden rowboats on the muskiefirst side and somebody beat me here with my guess!
Posted 3/21/2008 7:23 AM (#67357 - in reply to #67354) Subject: RE: Aqua-Vu Under Water Mystery #2
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Posts: 86
We have a winner. Zach will insert the video and announce the winner. The answer will be easily seen. Sonar is difficult to interpret and there were many correct answers as many targets look the same. Bumps on the bottom are often fish. You can ask any question and I will try to answer them.
I will then post some video and sonar that match for similar “bumps” of fish and other targets so you can compare the views. Visual is much better than words. I have developed a collection of simultaneously Aqua-Vu video with my sonar recording at the same time. I started collecting them for my classes and DVDs but I have found that they have helped me understand sonar much better. If you never “see” what the sonar “sees” we are guessing.
Posted 3/21/2008 2:03 PM (#67396 - in reply to #67286) Subject: Re: Aqua-Vu Under Water Mystery #2
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Posts: 4
Congrats, I'll be looking forward to it. I'm from the Muskyfirst site but signed in here to get in on the contest. Last year when I was looking for a video to help learn my X15 Worrall and the guys over there recommended your dvd. I've since recommended it to many people I fish with. The information is helpful from everything I do from musky fishing reservoirs to walleyes in the Great Lakes. I would suggest that anyone here that has not seen these videos to pick them up, guaranteed you will learn something.
Posted 3/23/2008 12:25 PM (#67463 - in reply to #67433) Subject: RE: Aqua-Vu Under Water Mystery #2
Member
Posts: 86
Old trees that look like bumps is the answer, but many of the answers look like bumps. Bumps on the bottom can be anything from logs, fish, boulders, to anything. So how do we tell if a bump is a fish or something else? I struggle with this all the time. Statistics are in your favor as most bumps I have viewed with my Aqua-Vu are fish. The screen capture is of fish "stacked" is captured with the console sonar. The 2nd screen capture is with the bow sonar so I am going 2 different speeds. Notice some of the fish are bumps but the video shows the walleyes swimming above the bottom. 'Bump" fish are actually not on the bottom.
I have sent the video to Zach to display. Next will be boulders as bumps.
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(bump stacked 2.jpg)
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Posted 3/23/2008 7:38 PM (#67468 - in reply to #67286) Subject: RE: Aqua-Vu Under Water Mystery #2
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Posts: 86
This video is a sample of the Aqua-Vu video I collected while I was on the bow mount while I was recording the "bump fish" sonar. All the fish I saw were swimming and none were on the bottom. Bumps on the bottom can be fish or logs.
Posted 3/24/2008 3:53 AM (#67475 - in reply to #67286) Subject: Re: Aqua-Vu Under Water Mystery #2
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Posts: 744
Thanks to WalleyeFirst, Aqua-Vu and of course Doc. That image looked familiar to me from my fishing at Petenwell and Redstone, where I often find the timber on the top of the break, and some that has fallen down into the channel. The best spots have the wood at the top, on the break, and along the bottom of the break. Thanks again, guys.
Dave S
Jesse Buechel
Posted 3/25/2008 8:54 AM (#67540 - in reply to #67286) Subject: RE: Aqua-Vu Under Water Mystery #2
Double echo means it's a rock bottom but the humps are not on the bottom echo so they cannot be rocks. Knowing doc this is probably a spot where he threw a couple of tennis balls weighted down or some lama droppings.
Posted 4/1/2008 7:13 AM (#67870 - in reply to #67623) Subject: RE: Aqua-Vu Under Water Mystery #2
Member
Posts: 86
Bump #3 is an example of boulders that appears as solitary bumps on sonar and look like logs or fish tight to bottom. I am showing these to demonstrate that a lot of the previous answers to Mystery #2 could have been correct.
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bump stacked 2.jpg (63KB - 98 downloads)
