In amongst the quad trails there are several miles of very good single track. Even without finding the single track some of the quad trails can be quite challenging due to steep climbs and rock gardens. there are several fun downhills here.
Head out of NoHo west on route 66. continue to westhampton and go past overlook farm stand. continue till you see lyman rd on your left. Go down lyman till you get to the dam on your right. Park here. the trails are not marked and are off of the quad trails. Just go down the quad trails and look sharp.
http://www.singletracks.com/item.php?c=1&i=5379