Haha my bad teedee! I'm gonna do the same thing with my fig 9-that is replace it with some kind of nacra biner. Right now I have my tarps permenately attached to the continuous ridgeline via tiny continuous loops in a 5 wrap prussic configuration. I need to get thAt fig 9 replaced with something similar to what you are doing but I am worried about not being able to get enough torque to really get it tight like a guitar string. With the fig 9 I can really crank it down.
this is how i do my tarp ridge.i can easily get it as tight as if using a figure 9.in fact this works the same basic way.allmost as easy
edit..sorry this does not relate to nacrabiners oops