I too pronounce the "H" in words such as "whether" (by pronunciation distinguished from "weather")and I was born and raised in New York. I don't get a lot of comments about this. There are many New Yorkers who don't speak in "Brooklynese" and realize that "Long Island" are two words not one.
Heck, yeah! When is not wen; also, whelp is NOT welp, which should be welt anyway.
As to Long Island, don't most New Yohkahs (speaking of non-rhotics...oh yeah, that was the other thread) kind of put two gees in there? A regular one on the end of Long but adding one onto the next? To me it sounds like they're saying Long GUYland.