Do you have shock cord running the length of the quilt or just on the ends. It's a great weight savings not running the shock cord but I find it also causes saggy problems. The shock cord will help seal the sides to the hammock.
Yosemite Sam: Are you trying to make me look a fool?
Bugs: You don't need me to make you look like a fool.
Yosemite Sam: Yer deerrrnnn right I don't!