OH boy.. a NY cut is not the same as flank steak here, nor London Broil...
Good London Broil here is called an "oyster cut"...
I prefer them "pot roasted"...
They tend to be tough and not as tasty as a Ribeye, Club Steak, Flank Steak or a Skirt steak...
London Broil also makes GREAT Beef jerky in a smoker...
http://en.wikipedia.org/wiki/London_broil