YES, all the same, sorry; been distracted.
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The 2 Turn builds like w/Round Turn for DBY or Clove for Water Bowline; can be harder to mange 'Nipping Loop' part of construction (w/2 rings).
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Slip-Knot method makes multiple rings easier to manage; gives them structure to sit on.
Slip-Knot method...
Knot names vary, several references for Jacked Bowline.
Double Bowline upgrades the "Nipping Loop"(IGKT) in Bowline construction from a single Turn base to Round Turn (RT on IGKT forum).
If make same RT into CLOVE is 'Water Bowline', because is a sometimes a very needed upgrade in water, grips...
To me the Half(HH) Hitch/Marl strategies provide a 2nd grip yes;
But most importantly, are for inline pulls along spar like our loads commonly hang.
To place the entrance/Standing Part of HH/Marl pure inline to exit/ Bitter end of same HH/Marl;
correcting the inline pull on spar(that should be...
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That was one of my first thoughts..
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Previously, i honestly tried to track down some of the numbers i've watched over years and couldn't find any;
many broken links in my stash etc.
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i do know that i really pushed for DBY over years; and fought this narrower difference stated between the 2...
i'm sorry i've been watching this specific issue intensely for 20yrs. trying to de-code rope mechanix in general;
and that is what the guys i think are most knowledge-able seem to say after a lot of chasing it with all i got ;
as DBY was my own choice in materials we use.
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Perhaps i was slack...
A Double Bowline shows testing out 5-8% stronger, and much more secure in tests.
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The theory is that the same primary deformation of the most loaded Standing Part is in either form (single/double Bowline);
just Double Bowline gives a longer route over that deformity of 2 rings rather than 1...
Quite a dead-drop purposefully into loose line;
by someone willing to stand aloft next to all that coming apart!
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i'm w/Reg on the space between backcut and block, no face.
i'd always take at lease Round Turn around rope part to block/ not just simple Turn.
>>Figure some kind of Backhand Turn...
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