I fished there allmy life and I can tell you if the water is ther and you canget out the tunsa will probably be there. Fishing the end of the season has produced some wild Bigeye bites! You probably wont see and yellowfins but the bluefins, longfins and Bigeyes could sure still be there.
I have personally fished the last week in Nov and crushed the Tuna. It should be going off on the eastelbow of the hudson with Bluefins right now if the water is still there.
A few years back a friend of mine that worked on a longliner had the best bigeye and bluefin trip he ever had the first week in Dec. There first set by the fishtails had every bait eaten by a Bigeye (all between 150 and 250) or a Bluefin. The one Bluefin they kept was over 500lbs! Luckly most of the hooks had Bigeyes hanging. Filled the boat in just 2 days, after off-loading the weather turned wicked and couldnt get out for another 3 weeks and the water was gone, No tuna at all.
Here's a shot you might like from my boat a while back!