Here is a few pictures of what I am thinking of keeping in the water.
Here are some trees that will only be in about 4 foot of water. I want to keep them to shield my house from the road that you can see in the background.

This is a group of trees that are going to be in about 8 foot deeper than seen here. the trees are in 2 foot of water now. i have dug a channel around the trees that is in about 7 foot of water now.

Tree off a point in the deeper part of the lake, this is right near the bowl.

This last picture shows a 5x8 foot deep channel intersection and an island with a tree on the edge. If you look very closly you can see flags on the island. those are the projected water level. on the left of the photo is another hump with some blocks at the base.

I know i only need 20% of surface area with structure, I dont think i have too much. the total surface area is about 3.5 acres
thanks
Dustin