The trainer says the birds have to come from the ground to simulate upland. So we walk about 5 miles to jump ducks in a hayfield with a stream and oxbow ponds. Great exercise, and she's picking things up quick. Today she did awesome at "don't chase the damn cows" and she found a cripple from last week (We looked for a teal for 30 minutes before calling it off. She scented it today and bailed into the pond to chase and retrieve it.) and chased down a mallard in a thicket. She played keep-away with it, but I wouldn't have gotten it without her help. One triple retrieve today without a hitch.
She's not retrieving to hand, but she will fetch any bird out of water and bring it well up on shore. She did a double retrieve out of a high-flowing creek last week. I think that's pretty stellar for a dog just shy of 20 weeks.
I'm sort of working on "Whoa" but using "Hey" instead. Worked great on the cows- she figured it out quick. She stayed focused on the cow, but stopped. The she'd listen to "here" or follow me on a new course.