If you park off Possum Hollow Road, its across the road. From the lot, jump on the trail. From the parking lot and bear to the left at the first split. Follow that down to cross the road and then follow that trail to the first bridge crossing, cross the bridge and then take a left (the long log ride that ends in a jump is to your left on the bridge.) Follow that trail dwon around the log over and then bear to the left to take the trail that drops down to the long bridge crossing. Take a left after the bridge to reach the bottom of the corkscrew trail. To come down the corkscrew, take a right after that bridge and follow it into the climb section the bears to the left near the house. Climb up to the Snow Goose cutoff trail and take a left - that will bring you to the top of corkscrew.
For a full loop, bypass the Snow Goose cutoff until later and follow the climb up to the log piles and take a right turn right past them to follow the trail out to Judge Morris Estate (you;ll have to cros the highway to get there.) You can then come back the same way and hit Corkscrew on the way down. After that, take a right at the bottom of Corkscrew and head out to cross the bridge to the Lenape Trail, which will circle you back toward the parking area eventually.
You could spend all day out there if you want to -- the trails are well marked and if you just explore it, you;ll eventually circle back to the parking lot anyway. It's a great ride! Have fun!