Green Gate Parking Lot
There has been a new route established to get to the road/trail on the back side of Brundage that takes you to the lookout. This particular intersection will be now called "R". You can take the old "R" intersection, which will become the new "S" intersection and go around the east side of Brundage to get to intersection "T" which is the top of what is called Copet Creek.
I am not sure if it has been groomed yet but has been marked quite well with snow poles.
Leaving the parking lot you don't go far and turn south until you cross a non-plowed road and follow the road to the southwest to an old gravel pit. From there, go north and follow the road until you see snow poles leaving the road. Follow poles until you hit another road and go north again until you see more poles that leave that road. That will jump you up to the new "R" intersection on FS Road 451.
Enjoy.