If you'll be using LineLocs and don't mind a slightly heavier cord, the 2.5mm Glowire works perfectly without needing any backup knots. If you use 1.75mm Zing-It or the like, it will hold, but can loosen with wind gusts. A slipped half hitch as a backup solves that but goes against the goals you're aiming to achieve. 2mm Glowire is certainly less slippery than 1.75mm Zing-It, but my guess is it's still possible for there to be some slippage, hence Lawson created the 2.5mm specifically to be an optimal match for the LL3's.
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