We usually put most of our structures at 10' to 15' foot deep. If we had 25 Piles, we would put 15 in 10' to 15' feet, 5 in 5'-7', and 5 in 20' foot. We feel that the fish spend more time at the 10'-15' depths during the Spring & Fall. Early morning Summer you can catch fish in 12'-15'.
Just my opinion...
keith
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Keith Simmons