-
Maybe on the Slate!?
The Pinehurst one is doable on 25mm slicks, but I stopped using that route after I got the carbon wheels. No foot down, but it's steep and cracks are sharp looking.
A better use for the Slate would be going down Juniper Top (or whatever that downhill through the woods towards N / NW might be) which has sandy hairpins with really steep downhills. It was very fun to descend, mostly walked/slid down though...
The one on the SW side of the Box Mountain (immediate right from start of zig zag) that leads up to the car park?
If you liked it, next time try the sketchy bit going up to Pinehurst Rest Home... takes you middle of the zig-zag as well. Extra points if wet.