OK, this is ugly, but hopefully you can glean enough info... (or just buy the Freedom line)
Yeah, so. Set out to emulate the Freedom winch line setup (pictured below).
https://bleepinjeep.com/product/freedomline/
It's a clever bit of rope/splice work. The line has a large stopknot on the end, and doubles back inside itself emerging a few times to form a hole for the end topknot to pass through, effectively forming a soft shackle of various sizes right on the end of the line.
Right now I just have a couple of the loops, as I did not like the way my stopknot looked sticking out the front of the fairlead. So I modified it to just be an end loop with some extra loops worked in at like 2 feet and again at 5 feet from the end. I could then just apply a soft shackle through any of the loops, or use the shackle to affix the end loop back to any of the other ones.
So essentially it's the Freedom line without the end knot, and I just use a shackle instead of relying on the end knot because I didn't like the knot sticking out in front.
Making the loops was pretty easy, I formed a locking Brummel on the end loop, ran the free end down inside the line until I wanted another loop to use, then poke it out to make the additional loop, then just modified the locking Brummel to "lock" both sides of the loops in the running line.
https://www.animatedknots.com/brummel-eye-splice-knot
"Locking" the eyes in the running line was difficult, and if I had to do it again, I'm not sure I would. I'd lock the end loop, but just poke out the free end to make the extra loops, and leave a nice long bury to keep the free end line from pulling out.
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