I rode Hall Ranch today from Antelope and it wasn't too bad, and I saw other riders coming from the rock gardens so I bet they were good too. I would think Marshall Mesa would be rideable and I would have to say the Devils Back Bone should be good too.
2007'ish Heckler and 2006 Chameleon
If anyone needs the help of a prototype/custom machinist let me know.
White Ranch is mostly rideable. Belcher up to Maverick all clear. Maverick 95% rideable. The fun part of Longhorn 100% rideable until you have to climb back up to Whipple, than it gets pretty sloppy in parts.