I will Marty. I actually spend a lot of time right outside your back door if you live East of Nevada. There's a farmer up there that's always been real generous to me with permission, so I keep tabs on his properties when I am scouting.
All you really need to know for shooting ducks out of fields is, the colder the better and scout. They really don't start dry feeding real strong until all the shallow water is iced thick. When they have to sit out in a hole in the middle of the roost with a bunch of geese just to keep water open, they start looking for dry feed with lots of calories. Corn and beans. Beans suck because they are hard to hide in, but it can still work if you can find a hide. They also get the snow blown off of them a lot quicker by the wind than a corn field will. Find a field they are dry feeding in, it's usually best to scout in the afternoon(and hunt for that matter) when it's extremely cold out. You can use your Canada goose decoys to hunt ducks, just stick as many spinners in them as possible. One of the problems with hunting a tall stubble corn field can be long range visibility of your spread to the birds. That's why we usually stick a couple dozen snow goose decoys out when we are hunting one. Actually one of the best duck decoy spreads for us is a snow goose set up. The ducks really key in on the light geese. They will usually give a snow flock a "swoop" when they see one and they can see one from a long ways away. The ducks know the light geese are usually eating something good.
The biggest key though is scouting. You can be 1/2 mile off the sweet spot and never even crack a shell. I won't even go unless I scout it the day before. It's just not worth the expenditure of time and money unless I know they were there the day before and sometimes that's still not enough. Those little suckers can eat all the grain out of a field fast and they will feed late into the night sometimes, especially when you start talking tens of thousands of them with the same number of light geese. It's still not time for me to get too awful excited about it, but usually around Christmas or a little after it starts getting good. I know every year the season ends and I am thinking I could really have evened things up with the ducks if they would just give me another week or two