Here is a strategy for viewing the Stilt Sandpiper of Schoolhouse Road in Franklin Township, from Jeff Ellerbusch:

This bird is gettable if you park on Schoolhouse Rd., next to the west most tip of the dirt mound they’ve made. Step over the small black fence thing, climb the dirt mound maybe 15 feet, and scope the largest puddle…it’s a great bird and the habitat is short term.

Stilt Sandpiper at Schoolhouse Road construction site, Franklin Township, NJ, Aug. 18, 2012 (digi-phone-scoped by J. Ellerbusch)