Parking is at this big house on the south side of Flourtown Rd. Parking is limited but there should be plenty of room as long as everyone is aware about how much space they are taking up. You can go past the house and find a small parking lot, then walk back up to trail. From the parking area you are going to walk east on a path paralleling Flourtown Rd. Eventually the path will bend down to the right, follow the paved path (NOT the main boardwalk) until you reach a wooden bridge. Here you will see a narrow seam of river rock going out into the meadow to the south of the bridge. The bird has been very loyal to this seam of rock and seems to exclusively spend its time in it, it may take some patience but eventually the bird should work its way into view. Also note that it blends in very well with the rocks and will frequently disappear under/into the rocks so be alert and rigorous in scanning the area.
The trail is a loop, you will probably see birders huddled around "the spot".
good luck to anyone who goes, it is amazing bird to find in our state.