Daily Archives: 05/14/2019

Down Imaging and Sonar – Where’s it at?

I seen a post on Facebook the other day about “Do You Really Use Your Depth Finder To Help You Catch Fish”? That is a really good question, as I have seen a buddy that I fished with that had a new Garmin Depth Finder on his boat but never turned it on while we were fishing. In his case I think it was all about having the “Newest Thing” on his boat. It’s the same as having Power Poles® on your boat but never put them down. If you’re going to pay out the money for the newest technology then you need to take the time to learn to use them. I personally have six units on my boat but actually only use three or four of them at a time. Two of the units were small in-dash depth finders that came with the boat.

One thing I had a hard time understanding when I first got my first depth finder an old “Super Sixty” flasher that I used to catch a lot of fish watching it. I could watch my jigging spoon go up and down as I lifted and lowered my rod and see the fish signals come to the spoon while watching the flasher. Now that we have the choices of Side Imaging, Down Imaging and Sonar all in the same units they have really become a big help in catching fish whether it be bass, crappie, bluegill or white bass.

As we ride around the lake or body of water you are fishing looking at things that pop up on the screen and wonder what they are. To learn this, we must both spend the time on the water learning our units and to actually know what they are that we’re looking for. Here is a screen shot of something on the bottom that my boat passed over. One what is it and second where is it in relation to the boat and where do I need to make my cast to make contact with the structure?

Okay take a look at the photo above and see if you can tell, first what is it, and second where is it and third where do I cast to so I can try and catch any fish that may be located in the structure. Just by looking at the photo above, I first thought it was directly under the boat which in this case part of it is but most is not. If it is under the boat where under the boat is it located? I would in the past make a cast straight behind the boat to try and make contact with the structure. Sometimes I would make contact with the structure but most of the time I did not. The one way we can tell that part of the structure is partially under the boat is the red coloring in the screen shot in the brush top. This red color tells me that the strongest signals are in the very center of the sonar cone. Take a look at the photo below to get a better understanding of what this means.

Now let’s take a look at the same piece of structure with our Down Image unit and see if we can see what it is and where it is.

Okay we can tell that it looks to be a brush top someone placed in the lake and there looks to be one fish on the right side of the brush top on the right at the edge of the screen. By looking at the fish and the shape it could possibly be a crappie as it is tall as it is long. But this is only a guess and we have no way of knowing unless we actually catch the fish.

Okay so now we know it is possibly a brush top but where is it. Well again since I thought I drove over the structure you’d think it is behind the boat. But again, it could be but also could not be under and behind the boat.

Now let’s see what the structure actually is and where it is in relationship to the boat. We can determine all this by using our Side Image unit. Not only will it tell us what it is but where it is located and where we need to make our cast to try and catch that fish that we are after.

Okay from the side image view we can tell that it is actually a brush top under the boat and also a bucket with what looks to be canes by seeing the shadows of the canes. And last a huge stump to the right of the boat about 20 feet to the right of the boat. By the way can you find the fish in this screen shot? Hint look for the shadows they give the fish away.

In this last screen shot I did with third party software available to you the angler you can see the location of the structure.

So, to get the best out of your new or current units you have to use the tools you have and learn to use them to help you catch more fish. After all this is the reason, we spent the hundreds of dollars if not thousands of dollars on the “Newest Thing” for our boats.

Tight lines……