Alieworms, what else?

Size 14 with a brass bead works most of the time, but occasionally the fish will only take them without the bead.
I haven't been in a while, but really, the usual flies for other stocked trout streams will work. In the special regulations section, with it's wild browns, the fish can be a bit more picky. I've used flies from size 12 down to 22, and gotten fair results on almost all of them.
In the deep runs throw a streamer or a woolybugger.
In the riffs, I've done well with BWO's, but caddis also work. Right now, a good color is yellow, but olive and tan also work. Catskills from 12 to 18, caddis 14 to 18, midges, 18 and smaller.
For nymphs, GRHE, Pheasant's tail, Brown Stonefly, Prince in 12,14 or 16. Midge pupa and emergers in 18 or smaller, scudds as well.
Go prepared for almost anything, and, as Peewee is fond of saying, "let the fish tell you what they want." I've never found the fish in the SR to be all that fussy about size, but there are days when they won't hit anything.
