I put 8 in my 3/4 acre pond and there was 2 so there is 10. After the first year and getting a feel, I will keep the same amound of structures but add more trees in those spots, then I just want to try a few laying down on the bank because I rarely see any fish unless there is something for them to get next to. I was thinking like 3 spaced a foot or two apart trunks twards the bank. I could always remove them...
