I'm in the middle of designing a lightweight hammock that can convert into a bivy. The shell will be made of Epic Malibu and will have bug netting that will fully enclose the occupant. My one stumbling block is trying to find a good, strong dyneema or spectra line that will be amply strong enough to fully support someone, but that is thin and light enough to not take up so much weight and space. Until now I always used the polypropylene strapping that Ed Speer recommends in his excellent book, "Hammock Camping", but it is quite bulky and somewhat heavy. I'd like to use the line that is used on the new Hennessey Hammocks, but I can't find it anywhere. I've used T100 dyneema line from West Marine and it is strong and compact and light, but when coiling it so many kinks with dyneema sticking out develop that it is hard to unkink and the safety worries me. Does anyone know of a strong light line that coils easily, holds knots well, has a non-slip casing that isn't too abrasive, and that doesn't develop kinks, plus can hold at least 600 kg? I've been looking for more than a year now and I simply want to get started on the project.