RE: Decoy spreads on River
We hunt the Arkansas River in Central Kansas. Not quite the same situation but I have some suggestions. Walk up and down the river and observe how the ducks sit on the river. We simply string our ducks out in a line up and down the banks. Sometimes two or three wide. I've found that's what the ducks look like on the river while they sit there.
How deep is the water you'll be hunting in?
Mike