Haven't ride there in awhile. PM sj_john he might have an update on current conditions at GCC. Never heard of any hunters there. Both CCC and Ceres are in really good shape after the storm, all trees and debris cleared. Ceres is raked, CCC is not. There's TM at Ceres Sunday w a post ride after if you don't know your way around its a great way to get to know the place.
Rogue hunters are everywhere this time of year. On the trail within the park at Ceres there shouldn't be hunting. Some trails cross over property lines and those areas may be hunted. Only one run in with crossbow hunter that I know of, scary sh!t from the accounts of those that were there.
Been riding GCC for a few years and don't recall ever seeing any signs about hunting, but I doubt it's permitted.
I've never seen anyone poaching at GCC, but was part of a night group ride that had a run-in with a guy at Ceres. He was out after dark and armed with a cross bow.