Go with a Lab. have had a couple in the pass 30 or so years. Just got a pup (female)and she is great. I find them easy to train and willing to do just about anything for you if bring them up right. God luck
Go with a lab easy to train and fun to be around. But be sure to go with a quality breeding, its better to spend the money on a good dog then drive yourself crazy trying to force a dog to do something he dosnt want to. People like Chesapeakes there suppose to be very loyal but Ive heard they can be a little harder to train, also I think its probably alittle to hot most the time in Louisiana for them. And most of the other water dogs have long hair and Ive always thought that would be a mess to take duck hunting.