Took the Frontline out again last night and thought I'd experiment with the sag again. I decided to go a bit extreme with it (in comparison to my previous attempts with a hammock) so I attached the tarp line above my head (I'm 5'6"). I attached the foot suspension above that, and the head suspension at about the tarp line level.
Put the 1/8" CCF pad on a diagonal and climbed in.
Didn't have to change a thing, had much more room inside, and slept until 9:00AM this morning.
I think I'll use this setup in the future!