NY tickets are cheap, and at least here in MA, don't report out of state. I have lots of them.
I wouldn't bother fighting it. I've had experiences like that with sherrifs down in that area around Watkins Glen before. Three of us a year or two ago had a Watkins Glen sherrif follow us from the border of the town, all the way down to the Seneca Lodge, pulled in behind us so we couldn't back out, and spend fifteen minutes yelling at us because he had heard about three Audi's with MA plates driving at "insane" speeds down 17 the next county up and "running people off the road" -- none of which we'd done, of course... then he proceeded to tell us that the complaints had come from another county so he couldn't do anything about it.
We drove 25% below the speed limit the rest of the time we were there and went a totally different route back to 90 on the way home
We figure some townie probably got upset when they were passed by three loud cars in a row very shortly after the start of a passing zone, or something. Nothing illegal, but clearly someone got their panties in a bunch.
I just drive conservatively in that area...