Assuming that your 'curved object' is uniform - such as a bridge, then if you stayed the same distance from it, it would show straight. The opposite effect of a straight object appearing curved.

Very good question and I am not sure I am the right person to answer it because I am still having some concerns about the accuracy of setting waypoints as you show.

Until someone gives me a better understanding than what I have learned on my own, I will not use the DI to set waypoints. They will probably get you in the ball park but there is too much horizontal information compressed into the DI from the SI data.

At this point in my learning curve, I will stick with the SI to set my waypoints and expect them to be reasonably accurate.

FYI: DO NOT pull coordinates from your SonarViewer and expect them to be accurate.

I totally agree with this statement. I look at the sonar viewer to get a better feel for what I have been fishing but for marking wpts of stuff I have missed, I like to record all channels then every once in a while stop the recording, pull out into the lake, and review the recording with a 4 screen simulation. That way I can have a good look at everything and mark anything that I missed while fishing.

Can I get that cool blue color with the 4.0 update?

Yes you can, just download the new update.

A few new bridges thanks to Bobby Feazel and his mapping chip.









The chase was on!!

Here are a couple of more shots, need ideas on what is causing the distortion on the left side of my side scan. You can see the vertical lines from the top of the water column and also the scan quality between the right and left side.

I posted a picture of a lss transducer setup on a jackplate with transducer shield. My set up is the same.

I have a Skeeter ZX 225 and the transducer is mounted on the right side. 2010 model.

GREAT shots of the 'chase'. I am envious.

Your lines are definitely interference which is probably coming from the left side of your jack plate.

Check to see if the transducer is parallel to the bottom of the jack plate (side-to-side not front-to-back). If it is you may have to lower it a bit.

BTW: since you have the transducer mounted 180 degrees from the default position, have you flipped left to right?

Also BTW: did you notice the square hole in the deck of the bridge?

Thanks, the more time I spend on the water, and reading TFF and other forums the better my results. However I have to admit I find more after viewing my recordings on SLV.

I will check my transducer.

Yes I did flip my transducer position.

Yes I did notice the square hole !

Anyone know what the maroon squares represent. This is from Navionics Platium chip with the latest updates. Toledo Bend.

Building foundations.

Great, now you just gave me another 100+ things I will have to try and find and record, ha ha !! Any chance some of these or on your chip already?

Sorry, that might seem like a crazy question, I don't remember having these before, and I just did a software update on my Navonics chip, and did not get to test it until my last trip to TB and that was after I loaded your map chip.

I also did not notice them on the water. It wasn't until I got back and was double checking things on my Navplanner2 with my Navionics chip is when I noticed them.

Just added the LSS1 to my HDS 7. Found tons on structure I did not know was there with the side scan. My downscan looks pretty "empty" for the most part. It is picking up fish and shad but not much structure.

Does the new update change anything with your 2D sonar? My screen looks much different than it did before the update. I am not picking up nearly as much "junk" returns. But I am also not picking up as much shad with 2D. My downscan picks up the bait, and I confirmed it with cast net.

Cajunslo,

The series or rows of close straight lines parallel to your center line direction of travel are echoes causes by hard reflections possibly from the jac plate's large opposite side wall reflecting sonar energy. It can likely be greatly reduced by a splash plate installed across the bottom of the jackplate just above the horizontal plane of the transducer. Also the rigid mounted shield saver can make the problem worse coupling the transducer rigidly to the Jackplate and motor. The simple pivoting supplied lowrance mount is less physically coupled to the plate and better hides the false echo lines seen below..

When you eliminate the false echos, the remainder of the left side image will be able to be better filtered and processed giving it similar quality to what you see on the right images .The right side also is showing false vertical lines at but they are less severe.

[quote=cajunslo]Here are a couple of more shots, need ideas on what is causing the distortion on the left side of my side scan. You can see the vertical lines from the top of the water column and also the scan quality between the right and left side.

I posted a picture of a lss transducer setup on a jackplate with transducer shield. My set up is the same.

I have a Skeeter ZX 225 and the transducer is mounted on the right side. 2010 model.

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In addition to Lou r Pitchers suggestion about the hole-shot plate, Transducershield recommends adding an extender plate to most Skeeter, Bullet installs due to possible interference from the sponsons. The extender adds 4" of drop to your LSS-1 transducer.

Brian