You need a Knotty mod. Problem solved. Look in the DIY forum for a sticky titled Stretch Side Hammock. Basically you'll put a short piece of shockcord in the hem on opposing sides with a cordlock. Cinch it up and it takes the floppy out of your sides and you don't have to worry about the tension ripping it cuz of the shock cord. It also somewhat creates a footbox and headbox on a diagonal lay.
"As a well spent day brings happy sleep, a well spent life brings happy death." -Da Vinci