Maybe your best bet is to make wild ducks feel welcome and provide an incentive for them to come. But that would involve food. Especially if you want them to be near the area you visit on the lake.
We have a cute little couple, we've even named them, that come to our place because we have food out for our ducks. They're regulars here, and they even know the best time to fly in for dinner is after mine are in their coop so they won't get chased off. I leave the food out an extra half hour because I know they're coming. They're very comfortable here and sit under the shade tree when my drakes are out on the lake.
They actually don't eat that much since they get most of their food from the lake.
Maybe try that.