The Upper Winter Creek and Lower Winter Creek singletrack trails are where the real riding is at. Some sections are super tech and probably will force you to dismount, but for the most part it is awesome benchcut singletrack! I definitely went the wrong way around the singletrack loop: try going clockwise (Upper Winter Creek first). This will require a steep (but short) paved climb at the end after you finish Lower Winter Creek, but you'll do most of the descending on singletrack this way.
Read the full trail description here.