I'm making a pair of socks using the Knit Picks pattern for magic loop two at once toe up socks, and I can't tell how long I'm supposed to make the foot part. I know I'm supposed to try them on and then start the heel bottom when the "sock is past the instep and the edge of the sock is parallel to the anklebone". That doesn't really make much sense to me, and it says to see the illustration, but the only picture that could refer to has the person's hand in the way of where that part of the sock stops.
Anyway, am I supposed to start on the bottom heel flap when the sock is long enough to hit where my foot bends from my ankle? Or am I supposed to go to my ankle bone, which I'm taking to mean the knobby bone on the side of my ankle about an inch farther?
Anyone have any experience or suggestions regarding this type of pattern? Thanks knitters! It's much appreciated!