Dave :

I agree. The 90/10 rule works in natural waters. In ponds with bottom structure and added cover {trees, brush, or art.} I think its more like 70/30 . This is even more so when you have fish highways as you described to lead them to more brush piles. I have seen underwater films of man made phosphate lakes in Fla. where the entire lake has fish in the amounts of thousands of lbs. per acre. ewest