I live on a small inland lake in michigan.(300 acres).Our lake association tests water clarity every year.The last few years it has become less clear.They partially blame wake boats. The university of Minnesota did a study of the effect of large wakes versus normal boat wakes.The study tested the effect of large wakes on shoreline,dock,and boat damage and how these boats churn up the lake bottom on shallow lakes(which ours is)causing more sediment in the water. Interesting to think about?