your guess as to why first is as good as mine. My experience has been if the big uns are biting don't change as you have stumbled into the combination of color and presentation they want. As far as when to move on that is a coin toss. If your electronics are still showing a decent school I would wait till about 5 dinks then move. At the same time there are those that believe that fish school with similar sized fish so there is the possibility that the "big" school moved on. I am curious to see what the others have to say about this as well. Good question.
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