Avoid hunting roost ponds where geese spend the night, so you don't chase them out of the area. Follow them in the morning to find the ponds they use for loafing. They may feed in a field first, or they may go straight from the roost to water.
Once you find a pond, hide in natural vegetation or set up layout blinds along the shore. If the shore is bare, set up some shells or full-bodies and throw out six to 12 floaters.
You'll shoot most of your geese at midmorning after they eat breakfast. But it pays to get to the water early in case the birds forgo that first meal.
Plan to stay out all day if the weather looks right for a migration, and bring more decoys. On flight days, geese that are new to an area will usually drop into a pond first, and then look for someplace close by to feed before roosting.
Rivers are the exception to the don't-shoot-the-roost rule. Geese will move elsewhere on a river if you hunt it. Set some sleeper shells on a sandbar, a few full-bodies at the water's edge, and a dozen floaters in the current. Dig shallow depressions in the sand to better hide layout blinds.
You can have a good goose hunt with as few as four or five floaters, especially on smaller waters. On rivers and bigger marshes, set up 12 to 18. If you put out lots of decoys, set them in a U or J pattern that leaves a landing zone open in front of the blinds.
Call sparingly to pull geese into a water spread, and bring a goose flag. That motion can get the attention of a distant bunch that may be persuaded to alter their flight plan.