I myself...believe everyone has a little bit of the truth of what happened to the grass. The opening of the diversion for 90 days in 2010 for the oil spill did not help. The project where the Corp came in and dug cuts into the back Rice pond was truly bad. I saw them push barge after barge of rocks in the winter that year, coming in from Lafitte, and they took a different route along the lake each time. They pushed up mud the entire time....the barge and the tug was dragging bottom....with only about 2,5 feet of water in many places. Plus, I posted some pics of water coming out that back pond on a north wind before this project, and after. That back pond kept that side of the lake clear...no matter what they were doing with the diversion. Then in the spring...the grass started and spread out into the lake as it grew and cleared the water. The water clarity is not even close anymore since they cut into the back ponds. When the grass was down to only around 20% coverage in the entire lake....I was told ...by at least two dozen people...they saw the Corp spray boats out there hitting it heavy. I do not think the apple snails are the problem in the Cat....they seem to like ponds and bayous, and do not seem to lake big waves and disturbance....but quiet water.