Welcome and great shots. I have some of that digital camo material from WalMart I got a couple months ago. What I found was not ripstop and I believe it is probably polyester rather than nylon but still made a good hammock.
I was in one of my local WalMarts last night and now they are liquidating all the material at 25% off. So I got about 50 yards of material for around $35. I got 1 bolt silver 1.1 DWR ripstop, 2 bolts of gray ripstop probably 1.9 and about 3 yards of 1.1 digital desert camo (first time I've seen that).