Originally Posted by AE28
I used the link you provided.
It looks like a figure-of-eight in the end of the halyard and then a single half-hitch on the headboard.
Is that all of it?
That's all of it. I like to leave the stopper with a couple of inches between it and the bight of the half hitch.. it avoids stressing/loading the stopper and makes things easier to untie. The halfhitch bight on the headboard takes the load, much like the turn of a bowline takes the load on that knot. I've never had difficulty untying that knot even after a hard days' sailing. I have had the stopper slide up to the headboard after a couple of reef/unreefs, but it's there primarily to prevent the half hitch from sliding free.
We've been using that knot for decades..