Parked at Q49155 08556 C and went up the road towards Lough Avoonane. Shot off to the right before getting to the final rise to the lake and head in the direction of Lough Cruttia. You can go along the fence but you'll have to drop down bit to be able to cross another fence near a group of trees on the rivers edge, see pic.
Once over that, go around Cruttia on the right and work your way up thru some rocky terrain.
Go to the left of the waterfall at the back of Lough Nalackan and pic your way thru the remaining lakes. I had the Hendroff guide , but you could make changes when needed.
It's a truly spectacular way up. Eventually you'll join onto the Pilgrims path from the Grotto at Faha and it's the usual then up to Brandon. The walk from Brandon over to Gearhane is fantastic even if the top of Brandon was as usual in cloud.

Coming down off Gearhane, well, a few options.
You can head down to Mullach Bheal , Q45810 06752 D and come down the zig zag road at the back of the valley. Or drop off sooner at Q46256 08201 E, which I seemed to have passed out before,, oopps.
You can go the way I went, which Is follow the fence most of the way down around Com a tSudaire, Passing spot height 485 towards Gearan na hUileann, going thru knee high heather which gets worse eventually and turns in lines of wet rock, terribly uneven ground and just pure misery. By the time you get down to the road it's a relief.

Another alternative, having chatted to a farmer, is to come down off Gearhane and Head for Cor Cam spot height 635, Q47265 08534 F , and follow Mary Annes Wire down to Loch a Mhunain. I missed this turn off, I won't miss is the next time. Maybe someone has done it here already but I didn't see that mentioned in any of the previous comments. I can't confirm if it's possible to come down that way yet, but there's no reason to doubt the farmer..
I used the new East West maps for all the names above as it's a lot more detailed than the OSI one.

I have a video of it on YouTube if anyones interested. not sure if video can be embedded... hope the link is ok.

https://www.youtube.com/watch?v=ACX2zpEACxc

I've done a good shot of videos on the Dingle Peninsula but don't want to flood other peaks, so I'll just leave it here .. Linkback: https://mountainviews.ie/summit/9/comment/23941/