The below is probably the best designed cuben tie out I ever saw. Lawson used it some on his tarps at one time I believe. Not the lightest tie out, but probably the strongest. Here is his description of it:
"It's two layers of CT5K.18 1.5oz Black Cuben fiber laminated together with a piece of 5/8" grosgrain laminated in between.. The grosgrain webbing is then box stitched to help with lap sheer and peel strength.. It is then laminated to the CT2K.08 .75oz Green Cuben tarp and the tarp edges lap over the laminated section by 1/2" to further help with strength. No holes in the tarp body."