SI vs DI

[NoFishOnBoard]

cool. Are there any fish in the picture?

Here's one that shows fish on the beds a little better. The white dots on those beds are fish. Sometimes there's one, other times there are two near the bed.

Screen Shot 2017-04-01 at 5.51.26 PM by s s, on Flickr

[Wayne P.]

This is shellcrackers on beds:

[joebassletter]

cool! thanks.

[Iowabass3826]

I wouldn't care if my 998 or 999 lost DI. SI however is one of the greatest fishing tools I have ever used.

[Beegle]

Those images of fish on beds are Great! I never even considered seeing that on si. Definitely be watching for it this spring hunting for smallmouth on Saginaw bay.

[Schins]

I wouldn't care if my 998 or 999 lost DI. SI however is one of the greatest fishing tools I have ever used.

absolutely. i feel privileged to use it

[Champ2005]

This is shellcrackers on beds:

What is a "shellcracker?"

[Wayne P.]

What is a "shellcracker?"

Another name for a redear sunfish.

[RPM]

Another name for a redear sunfish.

If those shellcrackers were not on beds, would u still have seen them ? Its just hard to see smaller fish on SI against the background of very similar colors if u use amber. I set up my fish ID today as per your other posts, and hope it will give me another tool. The shadows I see can, in my opinion, be only fish. I don't have that much experience, and appreciate your help in learning this.

[Wayne P.]

If those shellcrackers were not on beds, would u still have seen them ? Its just hard to see smaller fish on SI against the background of very similar colors if u use amber. I set up my fish ID today as per your other posts, and hope it will give me another tool. The shadows I see can, in my opinion, be only fish. I don't have that much experience, and appreciate your help in learning this.

FishID will not show them on 2D---too small to qualify for the symbols.

To see fish, you need a darker background so the lighter fish will not be blended in with the bottom--lower the Sensitivity setting. Most of the Imaging colors are monochrome so everything is the same color, just different intensities of that color. Amber is monochrome.

See the bass on the lower left side?

[Wayne P.]

This screen shot has several trolling motor rotations, but you can clearly see the fish and their shadows with the dark background:



This is crappie on a rockpile:

[Ladr6]

Do you have your chart speed high when this image was taken? Things look stretched out.

FishID will not show them on 2D---too small to qualify for the symbols.

To see fish, you need a darker background so the lighter fish will not be blended in with the bottom--lower the Sensitivity setting. Most of the Imaging colors are monochrome so everything is the same color, just different intensities of that color. Amber is monochrome.

See the bass on the lower left side?

[Wayne P.]

Do you have your chart speed high when this image was taken? Things look stretched out.

Not much may have been set to 4 or 5. The light area on the right side is shoreline weeds.
This was at an electric only lake using a bow mounted unit with transducer on the trolling motor, and when fishing I would be using speed 1, when scanning I would increase the chart speed to close to the GPS speed.

I turned the trolling motor twice that caused some breaks in the image.

I took this screen shot at this SI Range setting to demo the shallow coverage on the way back to the ramp.

[coontie57]

Yes I have a Gen 1 si on a Helix 9. Yesterday after installing a HD transducer I am now sold on SI. The HD was many times better than the junk The hummer folks put in the OEM box. Your problem will be as I saw yesterday on a fish attractor location. When I had the non HD transducer I never saw anything using either di or si. Yesterday the HD SI saw clearly the brush pile 30-40 ft away from the bouy where it was supposed to be. We fished it two previous times and zippo however we were off by quite a distance.

[coontie57]

My experience fishing bedding fish is that they quite often sit right off the bed. In this photo you can see the bed depression AND quite a few fish looking objects to me right beside at the edge of the bed. My guess is FISH.

[Wayne P.]

Yes I have a Gen 1 si on a Helix 9. Yesterday after installing a HD transducer I am now sold on SI. The HD was many times better than the junk The hummer folks put in the OEM box. Your problem will be as I saw yesterday on a fish attractor location. When I had the non HD transducer I never saw anything using either di or si. Yesterday the HD SI saw clearly the brush pile 30-40 ft away from the bouy where it was supposed to be. We fished it two previous times and zippo however we were off by quite a distance.

When I had a 798ci SI Combo, I used the Compact SI transducer on the transom and HDSI transducer on the trolling motor. Had a mount at the console and bow so I could use the unit at either place.

This is beds, bass, and bluegills with the Compact SI transducer. I know some were bass since I caught several of them.

[sfw1960]

When I had a 798ci SI Combo, I used the Compact SI transducer on the transom and HDSI transducer on the trolling motor. Had a mount at the console and bow so I could use the unit at either place.

This is beds, bass, and bluegills with the Compact SI transducer. I know some were bass since I caught several of them.

And the 640 vertical pixels is what made that combo so deadly and able to discern targets a lesser display resolution just cannot muster.