Re: LI area freshwater fishing-trout
PM Peregrines on this; I believe he lives on Long Island.
Not too long ago on Trout Unlimited's On The Rise there was an episode on fly-fishing Long Island. While some of the show was devoted to the salt (Bluefish &, as I recall, Stripers), a good part of it was on freshwater fly-fishing for trout. While that episode isn't running currently, perhaps they have a website archive where you can watch the show online.
On the whole, I'd rather be in Wyoming . . .