Ages since I've done it, but it's a great trail… Nicely worn in, a lot of it feels more like a "natural" ie nonpurposebuilt trail rather than typical trail centre trail. No, not massively technical- though the bits at the end have their moments- but then neither is most of kirroughtree black. I think I prefer just to blast round the red and throw in wee diversions here and there but the black's still well worthwhile.
Make sure and go and do Zoom or Bust on the way out- watch out for the trail on the left as you ride towards the start of Soor Plooms, it loops back to the bottom of the skills area at post 121, lovely.
Broon Troot? No such trail 😉 Move along, nothing to see here.