This is a 2 mile downhill trail that is best suited for longer travel bikes, but is not so rough that you can have some fun on a decent hard tail or trail bike. It's best to bring a couple of trucks and shuttle you and your buddies to make multiple laps.
When heading into Hatcher Pass, the road starts getting twisty. Drive about 4 miles from when the road starts winding and park at a gravel parking area on the left just before the guard rails on Fishhook Rd. From here you can see a portion of the trail if you look up the hill.
To get to the trailhead, keep driving up Fishhook Rd towards Independence Mine. At the 16 mile marker, there is a gravel parking lot at an overlook after the road takes a 90 degree right turn. The trailhead is at the close end of the gravel parking area and has a mound of gravel that makes a nice makeshift jump.
Hit the first jump and head down the trail. Take it slow after the jump, so you don't miss the 90 degree turn into the actual downhill trail. From here, just follow it down and enjoy the ride to the lower parking lot. Have a laugh and drink a beer and do it all over again!