i am probably wrong but I think the reason why fish don't get as big in green is because they don't have time to grow......just think of how many 9 inch crappie are taken out of green everyday....anymore when you go you will see 15 to 40 boats crappie fishing and just say 40 and they average out to get 20 keepers per boat that 800 crappie....... that is why when somebody goes with me I tell them to just keep 10" +..........