Distance: 1.4 km (6.0 DOC hours) - Unmarked route, hard - Moderate-hard terrain
Altitude: 704m to 842m. Gain: 138m. Loss: 56m . Gradient: 8 deg (Gentle)
Skills:

Unmarked route, hard (8/9)
Unmarked route, no clear geographic features to follow

minor (5/5)
A viable route, not widely used

Gentle (difficulty: 2/5)
Gentle slopes

Moderate-hard (difficulty: 4/5)
Tall, walkable scrub / large rocks, occasional waterfalls or gorges in rivers

None (difficulty: 1/7)
No alpine skills required

None (difficulty: 1/6)
No unbridged river crossings

None (difficulty: 1/7)
No alpine skills required

If just using a compass, simply aim SW and pray.

Coming down from Mt Rowe, follow the pink markers until you reach the start of the only relevant uphill going this direction. When falling, if you grab the cutty grass and don't let it pass through your fingers it doesn't cut (as much), and is better than being impaled by the upwards pointing branches hidden by the moss.
Once you get to the plateau, the string is attached most of the way to the summit trig (not a normal trig - made out of 4 track markers).

Note: Described in the reverse direction to your journey

Follow the string until you lose it and the markers. Whenever that happens strike off NE until you hit an uphill, then it's pretty reliable to just keep going up. If it gets very steep going up you're going the right direction.

(Some of the articles online say you can go up/down the hill at the '700', but personally heading to Mt Rowe and then down the track is better.)

From personal experience, I do not recommend this in the dark without a GPS.