No doubt you were refuring to me sir. My BGR was 23hrs 24 mins. in 2006. My JNC was 11hrs 47 mins in 2010 aged 51.
key to my JNC was the weather. I waited for a calm dry weekend in september. Conditions were perfect. JNC needs to be treated like an extremely long fell
race.
Any way we are on the wrong thread I guess. I can confirm that the Cumbria traverse is an excellent day out and should be on your must do list.