999 setup & pics

[Bryanmc57]

I'll give it a try and let you know. Pretty sure it's not the hull or jack plate.

[Wayne P.]

A distinct line near the centerline is return echoes from a hard surface.
A fuzzy line in the same place is return echoes from aerated water coming off the hull.

The OP's example is typically echoes from the tanks on a pontoon boat or exaggerated hull sponsons or flotation pods.

The line in this screen shot is from a trolling motor---

[Bryanmc57]

Next time I'm out I'll get a couple snapshots and post them along with a couple pics of the transducer mounting.

[Bryanmc57]

Here are the pictures of the transducer mounting. I didn't include pictures of the screen because it's obviously a turbulence issue. The lines completely disappear when not moving. Hopefully you have some ideas for a remedy... Thanks transducer 1.jpgtransducer2.jpgtransducer3.jpg

[Wayne P.]

Here are the pictures of the transducer mounting. I didn't include pictures of the screen because it's obviously a turbulence issue. The lines completely disappear when not moving. Hopefully you have some ideas for a remedy... Thanks transducer 1.jpgtransducer2.jpgtransducer3.jpg

There is no remedy for that location. The only way to not have the disturbed water echoes is for the SI transducer to be below the bottom of the hull. What you have is common and since the fuzzy returns are close to the centerline, it doesn't affect the overall image. The fuzzy will be more on the port side than the starboard side since the keel is more submerged than the part of the hull to the starboard side. Basically a non-issue.

[Bryanmc57]

Thanks, appreciate the explanation.