A few years back I tested the
Hitchcraft rope cleat. Much heavier and larger. It was and is excellent for many uses such as truck tie downs, etc. Quick easy one hand operation.
Was trying to use it for the hammock suspension using 3 mm dyneema coated line and the biggest problem was the small line. This was before Dynaglide, when 3 mm rope was considered small!! The small line had a tendency to occasionally slip through the cleat and essentially ream it out rendering the cleat useless. The Hitchcraft guy confirmed this with his own testing. The Hitchcraft cleat worked great on line a little larger than the 3 mm.
So, yes, the clamcleat will probably suffer the same fate if the thin line slips.
I personally like the Nite Ize AL small figure 9, for the tarp ridge line. It also gives me a 3:1 mechanical advantage in pulling the ridge line tight. Rated at 50 lbs but can undoubtedly withstand considerably more, probably at least 4 times as much if the testing done by HF members is any indication. Slippage is no problem even with 1.7 mm Lash-It. Easy operation to tension, easy one handed operation to release. At 4 grams each, they are heavier than the 2.6 grams for the clamcleat, but I think the AL material is more durable also. I also like them because I use the same Figure 9 to tension the 3 mm dyneema ropes securing my pack to my Dixon RollerPack. Since the uses are mutually exclusive, there isn't any conflict in usage.
For tarp guy lines I prefer to just use a Prussic. At 1 gram it is pretty hard to beat weight wise. The Prussic stays on the line and cannot be lost. Easy adjustment to tension and release. To attach to the tarp tie out, I simply shove the prussic loop through the tie out loop and shove a small twig through the prussic loop or vice versa. The twig has zero carry weight. Hard to beat that. Opie tested the Zing-It Prussic used on the Dyneema and found that it will slip at a reasonably high force that is still low enough that it will slip before the tarp material tears. The force required for slippage is, of course, dependent on the number of wraps used.
A suggestion on attaching your guy lines to the stakes. Use Super Glue. One or 2 wraps (or maybe a clove hitch or 2 half hitches) and coat with a few drops of super glue. Moisture is no problem and can be removed using acetone if you need to. Lighter than the multiple wraps used in the pictures.
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