In the late 80s/early 90s, myself and G1VDF used to do a lot of contesting on 2m as GW1VDF/P, mostly from just below Pen Y Gadair.
There was really only us two ops, so the 24 hour contests were hard graft.
As HF FD falls on the same weekend as 144MHz Trophy we tried to get our (very HF biased) local radio club we were members of to come up with the HF station as extra bods to assist us (and vice versa).
Now, anyone who has been to the Black Mountains, and particularly anyone here who has activated Waun Fach will appreciate why I regale the response we got to my girlfriend so often when we are out walking it is probably tedious for her.
It was decided not to come up to the Black Mountains for HF FD as, and I quote:
“The Black Mountains are too dry and rocky for HF”.