I agree with Bill, and if you kill some of the plants, I'd kill them in "blocks" allowing clear water to the shore. That will provide more edges for the fish to utilize. I mapped the pond, and came up with 38 surface acres.
I'd concentrate on aerating the deeper water like you said, meaning anything 10 feet and deeper. Tomorrow I will try and overlay the depth contours over the sat image so I can figure out how much of an area (and gallons of water) those deep areas cover.
