I know there are several posts about this but just wanted some clarification. When fishing a wing dike I know allot of people say fish above it. Why is this? Do you have better luck on the upstream side? The ones we fish are shallower on the up river side. Do you also have good luck on the down river side like near the end where the water comes around it and creates a deep hole. In short just wanted to know the most productive place to fish these and why. Thanks.