Spotting in NY!

Hi all,
our names are Pier Francesco and Alessandro and we are two spotters from Florence, Italy. (here some pictures from our small airport)
On third week of March we will be in New York and we would like to spend some hours spotting at JFK and La Guardia Airports. We can move only with public transports, so we would like to receive some advises about principal runways used and better moments of the day for the spotting.
We think that we' ll spot on morning at LGA airport at the point A and on afternoon move to JFK to the point E and A, obviously we don' t know runways usage. So if you have any suggestions or someone will want to join us, we would be very happy. :biggrin:

Thank you for your disposal and kindness.
Pier Francesco and Alessandro