I'm looking to make my first hammock and need to know what fabric to use for my weight. I weigh 235 and want to make sure I have enough factor of safety. I'd rather add a few more ounces than worry about failure when in the backcountry. I use an underquilt and would prefer to make a single layer hammock if possible. What do all you DIYers recommend? Is a single layer of 1.9 ripstop enough? I currently have an Eno Double nest which is 70d Taffeta. What's the ripstop equivalent?