You will pass the single track on the way to the parking area. There's a two-mile single track loop but it's not marked very clearly and additional side trails. On the other side of the parking area are a few more miles of trails, some muddy. It's not very technical but fun for the area.
Entrance to the park is across US17 from NAS.
http://www.singletracks.com/item.php?c=1&i=180