Vermont has some good duck hunting. Lake Champlain is very good throughout the season, and there are some good smaller lakes in the Northeast Kingdom that can hold some ducks. Vermont isnt Arkanas, but I know people that hunt the Missisquoi Natl. Wildlife Refuge, and limit out a lot of the days that they go out.
The only problem in Vt, is that a lot of the places where we used to hunt, are now all posted or have houses built in close proximity. This is a problem for hunting as a whole, but its getting tougher to find those good honey holes with access.
The numbers of duck hunters in VT are in the decline, so there is less pressure than there was a decade ago, however there are fewer places available to hunt. In particular small ponds and river bottoms that used to be accesible through farm land, but now are houses.