So- not only do you need to figure out what kind of ducks you may encounter to shoot at, you need to be able to identify species on the wing because there are restrictions in place for certain ducks and/or sex. That is the easy part. Figuring out where to go hunt can be just as much fun... some are tidal, some are not. Depending on where you are hunting there may or may not be restrictions on the time you may enter the property and the time you need to be out of the property. There are also limits to the number of shells you may have on your person on some of these properties. The total number of shotshells can vary or may not even exist. Some state managed properties even restrict how many persons may use the property at any time. And of coarse- there are some time specifications as to when you can actually set out your decoys... And as previously mentioned, you may need additional authorization cards to hunt certain species, or to hunt in certain geographical locations. It's all laid out in the regs...