I really liked the video and love their passion. I have to wonder about the presence or absence of foliage and its role in choosing places to search in the Kensico Reservoir, though. It was a long time ago and foliage that is there now may not have been there (or may have been a lot thinner) back then. From the snippets of footage of the reservoir from the road, it still looks pretty similar to the way I remember it, for what that's worth.
On a sort of related note, if memory serves, the areas with guard rail may have been those wood-and-cable types that they don't use anymore (presumably because they don't work very well).
One thing that sort of surprised me is all of the dinghys along the shore. I probably went down that road 10,000 times and I never knew that people stored boats there. I don't even remember seeing recreational boats on the reservoir at all, I sort of thought that recreational uses weren't allowed. But maybe that says more about my memory than about the rules regarding the reservoir.
Finally, they flashed footage of an intersection and said it was obviously different... I know that 120 was rerouted near the airport, but the intersection that they showed looked familiar and I'm not sure that it was, in fact, any different from the way it was in the 1980s (unless it was someplace other than the place I'm thinking of). Overhead maps would have helped me get my bearings a little better (but wouldn't necessarily have been of interest to anyone other than people who've lived nearby).