That's what I'm thinking, olddog. I actually used hpyfngy's angles but I'm handyman challenged. I may have screwed it up.
I tried using it last night but since I couldn't figure out how to get the tarp up w/o them falling over the light from the full moon eventually drove me back inside. I was pretty impressed with the loaded stability. I was flipping around, tossing and turning, etc and never felt like it was going to collapse. No matter how I moved it stayed put.