Well my eyesight may be failing but it looks to me that when stood anywhere near the back of all of the decking you will be overlooking.it's hardly overlooking
It's still nearly 4 feet high. I'm sorry but if you stand next to my fence all the way down the side of the garden you will be overlooking because there is so much of a slope.
You wont be able to overlook the fence when I put a planting bed alongside the fence parallel to it anyway.
Not overlooked. no planning required.