I was on this again a few months ago and checked my journal to refresh my memory.
Start at the FIRST Hunter Mt trailhead on the Spruceton road.
Start up the Hunter trail (old carriage road) and at about 1/2 mile from the start, you'll come to the large hairpin turn the bends to the right referred to in the above post. Leave the carriage road at this point, following the drainage of a large stream that angles up and left. Stay up on the left bank as its rough down in the drainage. The drainages will then try to push you LEFT which is OK. Climb thru the ledges below the Hunter-Rusk ridge and at that point, the connecting ridge is narrow enough that there is a distinct herd path. I hit the ridge about 1/4 mile from the cannister. As you climb, the leaves will be coming off so you'll probably be able to glimpse the ridge and Rusk as you climb.
There is a better way down. If fallen leaves haven't obscured it, there is a faint herd path that leaves directly from the cannister that is a nice way thru the upper ledges. It appears and disappears but it will get you down very nicely, and parallels your ascent route without having to deal with all the drainage you had on the way up. If you keep to your right on the way down, at around 2,700' you'll pick up a pretty good woods road that will take you right to the Spruceton Road, near where a small stream crosses Spruceton Road about 1/4 mile WEST of the Hunter trailhead where you parked. This is the SECOND bridge before the trailhead. Total trip is about 3 1/2 miles and 1,700' ascent. Nice half day trip. Be aware though, the woods in this area are rock-strewn. With falling leaves, it might take a little longer with the footing partially hidden.