Driving to or from Manchester State Park east of Port Orchard, you may have seen a small roadside Wynn-Jones Preserve sign, but no other evidence that it exists. The primary trailhead is on Wynn-Jones Rd E. just after turning off of Beach Dr E. The only parking option is immediately on the right before the mailboxes in a small turn-out. There is only room for a few cars, but you will rarely find another vehicle parked there.
Technically you can enter from Watauga Beach Dr. but the parking situation is not optimal. Although not technically a loop, you can start at the trailhead adjacent to the small parking area, and follow the trail, optionally taking the spur to Watauga Beach Dr. Continue the loop west back towards the unpaved Wynn-Jones Rd. just north of the parking area and walk the very short distance along the road to the starting point.