Flying IFR into and out of the NY Class B is definitely the easiest,
but I've come in a few times via FF and that worked out just as easily
as IFR. Just be on your toes and don't miss a radio call from them, as
things can get _very_ hectic in short order.

One of the best flights I ever had was flying from Sky Acres airport
(about 8 miles NNE of Poughkeepsie) up to 8500 feet, directly over LGA,
east of the East River over Queens & Brooklyn, then descending through
the Class B, rounding the southern tip of Manhattan, back up the
Hudson, and then direct from about Central Park to Caldwell airport,
all while talking to NY Approach. They were incredibly accomodating,
and I could tell they definitely appreciated the call up as I
approached from the north. Even though I would've been well above their
airspace, I figured it couldn't hurt to be talking to them, so
definitely give them a call up... you'll get some traffic calls for
planes departing EWR, JFK, and LGA, so maybe plan ahead and figure out
which runways are active at each airport... then you'll know exactly
where to look for departing traffic.

--
Guy Elden Jr.