After you enter Hone Quarry, pass through a section of residences and hunting camps before reaching the first and second pullouts for Hidden Rocks parking, located about a hundred yards apart on the right side of the road, directly across from Squire's Camp, one of the last private holdings in the Quarry. Parking here puts you within ten minutes' hike of the rocks, and avoids conflicts with other users/authorities.
Goon Rocks borders the road just past a jutting outcrop of rock almost touch the road on the right shoulder, between the last Hidden lot and the Hone Quarry picnic areas. A faint trail leads up from the road to the base of the Hang Em High panel. Left of this are the Discombobulator and the faint trail to the other Hone Quarry boulders.