I have not played Winnapaug myself, but will at some point, I am sure. I am pretty sure there's a substantial amount of Ross' work left at Triggs, which is also a treat to play.
And for anyone looking to play more than 18 holes on one of those balmy 45 degree January days, check out Fenwick GC in the Village of Fenwick (part of Old Saybrook, I believe). A marvelous little nine-hole course that Anthony Pioppi profiles in To the Nines.