Lighting the docks up

Was trying to see if any docks in particular were holding fish today, and "think" I figured out a way to see any fish under a dock. Still got to find a dock with fish under it but thats another story in itself. LOL. Got a bit windy today but was running up and down some docks at 1.5 - 2.0 mph, and tried to stay about 30' away from the dock itself since it was somewhat shallow water under the docks. I turned auto range off and extended the range as shown. Tried it with left view only or right view only, and L & R view, and L or R only works a bit better as you have entire screen to see one side or under the dock.

If someone will tell me how to resize the pics, they will show up better.

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Here are some more with variations on the settings, hopefully the settings are visible.

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The 3rd picture indicates what happens when you go from 455 to 800khz. The bright spots on the second picture are the dock support pilings, so this tells me that if there were fish holding under the dock, then there should be more bright spots scattered about, either along the edge, in the center or wherever the fish are holding.

Here is the pic with settings shown.

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This is what I can see...

So those dark lines running 90 degrees with the boat are shadows of the pilings?

Quote:

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Originally Posted by wilbur

So those dark lines running 90 degrees with the boat are shadows of the pilings?

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That would be my interpretation wilbur...

Maybe jimp will confirm for sure....

Rickie

rickie and wilbur,

yes, those dark lines or shadows you referred to are the weak returns from behind the dock support pilings on that particular setting.

In the darker pictures, (post #3) those bright spots are the support pilings as well, same dock but on 800khz instead of 455hkz. guess it all depends on what you're preference is in viewing. I am assuming that fish would show up as bright spots as well if there were any fish holding under the dock on the 800hkz setting , and there would be some shadows on the 455hkz setting.

If you look closely at the shadows or bright spots, they run in straight lines (for the most part and depending on the approach angle of the SI beams/boat position).

Thanks guys, I appreciate it.