We meet on the boardwalk in front of the Parachute Jump. It's behind Maimonides Park baseball field (on Surf Avenue between W 16th and W 19th Streets). From the subway station head directly to the beach and make a right on the boardwalk. The Parachute Jump is a 250' tall red latticework structure.
The tour ends across the street from Nathan's Famous on the corner of Stillwell and Surf Avenues. The Coney Island - Stillwell Avenue subway station is right there.