I used to like Greenwood lake until some a$#hole ran over one of my tip-ups with a snow mobile. I also like Mountain Lake. Both places have some big muskies. I have never had any luck at Mountain Lake though
To effectivly ice fish Greenwood you need your own snowmobile. Public places to get on the ice are few. Some marinas will charge you an arm & a leg to park there to go on. There actually is good fishing near the public access areas, but there is better fishing in places far from where you can park.
I also sometimes ice fish at Hopatcong, Shepard Lake, Waywayanda, Saffon pond, and Green Turtle pond.
I would like to try Sally's Pond and Round Valley.