As a general rule if you can float there you can hunt out of boat or in water, but if you step onto land above what is known as high water line you are trespassing, even to retrieve a duck.
Best to check with local wardens before trying an area.
Never go into someone's pond or walk onto their river bank without permission, good way get arrested or accidentally shot by deer hunter.
Stick to lakes, large rivers, and areas with permission.
Pro staff: Pop Tarts, Little Debbie, Armour Vienna Sausage! Just an old duck hunter that grew up hunting from Moes lake to McGirts Lake in beautiful Sparkleberry Swamp.