First of all, I've been reading the forum for some hours, looking at some pictures you took and I have to tell you that I have been impressed by some of them in the posts we can find in this forum !
Well let me introduce myself : My name's Raphael Brakha. I'm 21 and I'm a french spotter from Paris, and especially on Charles de Gaulle and Orly. You can find some pics of mine on A.net, more on planepictures.net (only 5 on Jetphotos lol... I'm new :p) and on my own website. If I come here, it's because I'm about to leave Paris for one month to go to New York as a tourist (I fly on Wednesday). I've planned to visit the city of course but maybe have some spotting days around New York airports.
I had the URL of the website associated to the forum by T-Bird76 (I guess...) and I had all (or the most ) the information about LGA to go spotting there, but not about JFK. I won't have any car there. But can you confirm that Subway A can bring you close to the Mott Avenue spotting place (Point D on the map of your website) and from here you can take the Q113 which can bring you to the B and C spotting places on your map ?
Well... Thank you for the information and I hope to see you during my trip ! ;)
P.S : I'm sorry for my English... It is well known that french people aren't good English speaker ! :D