For the fixed eye splices, "lock" the bury by sewing the tail end of the bury. Samson Ropes has a pdf
on their site. Page down to the end of the pdf file for the directions on "sewing" the tail end of the bury to "lock" the splice. I cut a short section of rope and pulled strands from that to sew all of the fixed eyes on my Whoopie slings.
Note that on their Whoopie Sling pdf they illustrate the fixed eye using a splice that threads the rope through itself, called a "Locked Brummel". Using this method actually weakens the rope more than a plain bury.
A plain bury has the disadvantage that the bury can work itself loose under no load or low load conditions. That's the reason for sewing the tail end. The sewing doesn't contribute to the load carrying capability, it just keeps the bury from creeping out.
That is the only advantage of the Brummel method of threading the rope through itself. It "locks" the bury in place. Unfortunately, threading the rope through itself also introduces weak spots. I'm pretty sure that Smason derates the rope for their Whoopie Sling by 40% because of the Brummel and not because of the bury. But I could be all wrong about this.
A side note on the UCR and Sling "discussion". One of the reasons I opted out of the UCR method is that, if I'm doing that method correctly, I needed 2 fixed eyes on each end of the hammock:
- one fixed eye at the tree end for hanging on the Marlin Spike Hitch, and
- a fixed eye on the hammock end for attaching to the hammock or ridge line
I also then needed the sliding bury splice for adjustment.
That is 3 splices per hammock end.
For the Whoopie Sling method I only need 2 splices: 1 fixed eye on the hammock end and the sliding adjustable bury.
On 1/8" rope I use 10" for the bury. The recommended 3.5 fids works out to 9.6" which I just make 10" since it's easier.
So for the Whoopie Sling method, the splices use up 20" of the distance from hammock or ridge line to the tree.
For the UCR method, I personally would need to use 15" and maybe 18" for the adjustable bury. The fixed eyes would still be 10" each. So the splices on the UCR method would be a total of 35" to 38".
So overall for the Whoopie Sling method I lose 40" between the tree span to splices and for the UCR method I lose 70" to 76" to splices.
Now For the Whoopie Sling method I could comfortably reduce the bury to 6" or 7" for the adjustable bury since the bury has forces exerted on both ends and I don't "lose" any of the bury length. I could not do this on the UCR method.
I use a 119" ridge line on my Bridges, so with the Whoopie Sling method and "losing" 40" to the splices, my minimum tree span is 13' to 14'. With the UCR method my minimum tree span is 17'.
I prefer a 14' to 16' tree span.
Thus two factors pretty much ruled out the UCR method for me:
- force on only one end of adjustable bury splice needs a longer bury and is more finicky in use, and
- the greater minimum tree span
Just my personal bias between the two.