Youghiogheny - 2. Top - Swallow Falls Rd. (Bridge above Swallow Falls [State Park]) to Hoyes Run. (MD)
On the river left after Muddy Creek comes in is Best Boof in Maryland. There's a big boulder river left with a horizon line above it which is the boof. A good eddy is formed above it for lining up or giving a first timer beta. Aim for the slight mound, lining up a so you're pointing slightly right of the the boulder. As you get closer you'll see the flake.