Wish I could get the tilapia too but can't. I took some pictures today of how my rope dragging process works. I have a pond that is long and thin running north/south. The north end has the best bank access so whenever we get a south wind all my DW and FA is blown to the north bay and I can use the method I've descibed above to remove most of the floating stuff. I don't have a problem with rooted weeds. First picture is before I started, note about 80% water is covered.

Next picture is of the drag in process, you can't see the rope but you can see how it is gathering up the weeds.

Next picture is from same vantage point after the operation which was two drags of the rope. It took me and my oldest daughter 1 hour 20 minutes to complete two drags.

This next picture is the after shot from the other end of bay taken from my bridge so you get a better look at what's left. A third drag would have removed half of what's still there.

The pics show the northern most 120 feet of my pond which is 550 feet long total. The rest of the pond is completely clean of everything because the wind blew it all into the section pictured. I know that you pros out there that manage ponds for others can't take the time for this type approach but for the guy doing it himself I think it beats chemicals. I would have spent who knows how much money and at least as much time if not more spraying and would have been creating lots of dead vegetations and chemicals in the pond. This way I got some excercise and at least have it under control. I will have to do this every two or three weeks in July and August do keep it controlled to this degree.