I just discovered a Floyd Bennett Field alternative spot in the south Bronx.
Just as you would take the Willets Ave bridge into the Bronx and take the right right off ramp to get onto Bruckner Blvd. Well, right there to the right on the down slope off ramp on the Willets sits a semi deserted concrete strip about 3/4 mile long with plenty of room on both sides for spectators.

A Big Willie move is needed. New York City needs a track NOW!