This is a Google Earth shot of a friend's property that was originally developed for Field Trial training. He's currently out of the sport, but he allows a few of us the privelege of using his place on occasion.
As I look at this overhead view, I see that the lack of detail around hillside grading, cover height, etc can hinder your ability to truly design a good setup. You don't really know what the dog will see, and how it is likely to affect the dog, until you see it from his level.
If any of you want to take a crack at what you'd do here, feel free to use your paint program and mark it up. I'd be interested to see.