I had them positioned so that the tarp would basically be asym like my hammock. The clips were offset like my body position so my feet didn't hit the tarp and neither did my head. I learned this after getting the footbox of my quilt soaked because it was resting against the tarp wall one rainy night. Osmosis sucks!
The current Superflies have two pulls on each wall, but I still only use one on each side and set-up pretty much like what you see there. Using both of them makes the tarp seem cavernous on the inside. Nice for foul weather and a group.