My double layer hammock has some issues, namely when I get in the two layers want to slide apart, causing it to lay funny. I sewed them together like I was making a bag, then flipped it inside out and sewed the last seam. So the only thread is right where they join together. Today I put another seam about an inch below on each side. I'm wondering about putting one right down the middle, which means giving up on putting a pad inside. Do you sew more than the edges on double layer hammocks? I'm thinking the extra seam may be all I need to get it to sit still, but I hate to put it all back together and then have to take it apart again. Considering just sewing a seam a 6 inches or so down the middle, that would still give me room for a pad.