If your prefered knot is the 4-wrap, why don't you cut the sprectra on your HH and add the webbing?
I did that to my HH. There are some pics of it in my gallery. I left a little over a foot of spectra, added some webbing I sewn a loop in, and tied a loop in the spectra. Then I cut off the excess spectra.
Is that too much to ask? Girls with frikkin' lasers on their heads?
The hanger formly known as "hammock engineer".