On the 914 forum there's a guy with a handle of "roblav1" (no proper name listed in sig) that made the following comments in response to my post:

"There is a corkscrew - I call it Fred's corkscrew"

"T7 was changed from my original drawing because of a couple ferns found where I drew the track... "wetlands". That was originally straighter. The name ought to have something to do with that.

"T8 is my favorite corner. I called it the "Archimedes screw"."