I changed a few to permissive (from designated), and added the permissive access gate connecting the trails to the South Boulder Creek Trail. The signage there indicates "Stay on Established Trails", implying permissive use, though what constitutes an established trail is a bit vague. The main N/S connector is clearly established, but some of the others have an informal look about them. There are even more shown in Mapillary imagery that don't at all look established, and I'll probably leave them unmapped for now.