Lynard,
What I am saying is this.
Putting brush piles in deep water is not usually beneficial to fish populations.
For the Brush piles to be beneficial, they need to be in the shallower waters. From surface to about 6 feet deep. That is where the fish are going to live and that is where they need habitat. Really deep stagnant water will not hold O2 and will hold Anoxic gases in suspension which will keep the fish away. The only "benefit" will be the slow release of nutrients over time. And since most ponds have too much nutrients, more will not tend to be a benefit.
So in short, Move your brush piles to areas where they will end up in 1-6 feet of water, that way the fish can use them as habitat. Placing them in long "highways" is beneficial for your fish, but keep the depths right.
