I did it years ago when you could hike in from route 622; did a loop by coming back down the Harris Hollow Trail. I've also done the trail from the top and then bushwhacked back up the canyon; saw the only weasel I've ever seen on that hike.
"Got tight last night on absinthe and did knife tricks. Great success shooting the knife into the piano. The woodworms are so bad and eat hell out of all furniture that you can always claim the woodworms did it."