I did exactly this for my eno dn. Just one really large whoopie sling. I may make a non-adjustable ridgeline in the future, but the adjustable one is nice to play with the length and figure out what is comfortable for you.
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That is what I did. I made a whoopie sling for the adjustability. I use a blake's hitch to keep the loosend up and out of the way. This allows easy adjustability while not being bothered by the loose end. Once I find the sweet spot, I will mark the length and cut the line to make it a fixed length ridgeline.
I have a adjustable whoopie ridgeline, adjustable from about 80" to 120", made from 7/64 amsteel in blue. you can have it and a matching soft shackle ( to attach the adjustable end), larks head the fixed loop end, for $10 shipped conus. just measured it, it adjusts from 84" to 129"
That’s cool! I was of making my own also...
I could send you the amsteel at cost, you need about 18 ft and usps shipping is about $1.20. 23x.18= 4.14 + 1.20 = 5.34. you would be better off buying a quantity from redden mariene using the discouint code, you will be wanting more to play with if you are anything like me. I have bought several hundred feet so far.
I use 7/64, both are more than strong enough for hammock use.