Marty i think the answer to your question about fish finder can be explained by looking in the top left corner of the screen. If I'm not mistaken the left hand side "HF" is in high frequecey mode while the screen on right "LF" is a view in low frequecey. Looking at the two different views of same school being eaten it kinda makes sense with more detail in high frequency mode. I very well could be wrong and if so I hope Greg corrects me.
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