Glad I got you guys thinking about this. Cp is right; since the DI sonar has some left-right width to its beam you can “paint” the side of a fish with the DI sonar that is not directly under the transducer, even when that fish is vertically oriented (not on its side). This would allow some of the DI sonar to also reflect off of the fins of the fish which may be displayed by the unit if conditions are right. Fish that were directly under the DI transducer would not be able to be shown with as much vertical height as the sonar would only bounce off of the top side and girth of the fish but not its sides.
Think about this now: Most of those fish are shown with their heads pointing to the left of the display. That means that as the boat passed over the fish them that the DI sonar contacted their heads first which means the boat and fish were travelling in opposite directions.
Any chance you made a sonar recording of this Kosmo?
Could you send me the original screen snapshot of this?


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