Tried an anticlockwise route from Trefor last year:
South to Llanaelhaern, east via tarmac then over the bridleway, carry on east on the road past Mynachdy Gwyn, then north to Bwlch-cerwin.

Got completely stuck and ran out of light trying to get back west through the plantation,
so will avoid that for the bridleway below Bwlch Mawr & Gyrn Ddu coming back west this time.

Any good? Worth a detour to the summits?

No one?
Not even one solitary soul?

Have you ANY idea how long it took me to type those sodding Welsh names in on this bloody awkward phone? No you don’t.

Honestly, I might as well ask the bleeding cat.
Hive mind? Aye, that’ll be right.
😀

Bendigedig!