What I think I did wrong: I used the Scotty transducer mount, but I THINK I had it too close to the side hull of my kayak/not deep enough.  It was only about 6 inches in the water.  My kayak sits about 10".  I saw very few full arches...which makes be believe my kayak's hull was blocking part of the sonar cone.

 

Okay...the vivid schemes are for the DV only.  They actually make it harder to see detail bc the image is on a black background, and the fainter contacts show up as dark colors.

 

For ME, I found running the downview in gray worked MUCH better, and made me more able to see smaller contacts.  Thanks to this, I located some small crappie on it.

 

I'll post a more comprehensive review once I make a second trip out.

 

 

On 9/8/2022 at 9:07 PM, CrashVector said:

 I saw very few full arches...which makes be believe my kayak's hull was blocking part of the sonar cone.

 

 

Your sonar can penetrate the hull. Many people set up their transducers mounting it inside the hull.

 

You're probably not seeing full arches because of your relative slow speed on a kayak.

 

Here are a few quotes from the article linked below:

 

"If you are not moving, in order for the arch to occur, the fish must enter the beam on one side and exit through the opposite side and basically bisect the cone. "

 

"Boat speed and movement greatly affect the shape and formation of an arch or the ability to show an arch at all. When moving slowly or with a high rate of display update speed, a fish will create an elongated arch. With the boat is moving at a fast speed or with a slow display update speed, the same fish will produce a much shorter arch. If the fish does not pass through the entire transducer cone angle, it will be shown as a partial arch or dots. In any of these instances, the user may not recognize that the fish was shown as an arch."

 

https://humminbird-help.johnsonoutdoors.com/hc/en-us/articles/4412812779671-Not-Seeing-Fish-Arches

 

4 hours ago, Koz said:

 

Your sonar can penetrate the hull. Many people set up their transducers mounting it inside the hull.

 

You're probably not seeing full arches because of your relative slow speed on a kayak.

 

Here are a few quotes from the article linked below:

 

"If you are not moving, in order for the arch to occur, the fish must enter the beam on one side and exit through the opposite side and basically bisect the cone. "

 

"Boat speed and movement greatly affect the shape and formation of an arch or the ability to show an arch at all. When moving slowly or with a high rate of display update speed, a fish will create an elongated arch. With the boat is moving at a fast speed or with a slow display update speed, the same fish will produce a much shorter arch. If the fish does not pass through the entire transducer cone angle, it will be shown as a partial arch or dots. In any of these instances, the user may not recognize that the fish was shown as an arch."

 

https://humminbird-help.johnsonoutdoors.com/hc/en-us/articles/4412812779671-Not-Seeing-Fish-Arches

 

 

 

That's probably what's going on.  The fishID thing marks them as fish though, and I see the spot on down scan.

 

Garmin said I can't use downview through the hull...otherwise I definitely would have mounted it in the kayak.