Nice stuff Shoobe.
On one night land nav course at Ft Lewis, I discovered that I had lost two of my 100m beads when I ran smack dab into one of my points early.
After fucking with the map / protractor and lane sheet long enough to get mad, I dropped my harness and took a breath. That's when I noticed I had a couple beads that went AWOL. I pulled a chunk of 550 out half hitched it through my button hole on my BDU collar and proceeded to tie an over hand for every 100M and a figure8 for every 1K. It was a pain in the ass, but it got me through the course.