Woodduck study .. do ducks have dominate wings

I set a trail camera in a very close setup, overlooking a small pond area, to get pictures to see if ducks always overlap their wings the same way when swimming or setting. After 200 photos of the hen woodduck, while swimming and after coming back up from diving, it appears to be random. I was hoping to see a dominate wing overlap after diving and using their wings to swim under water. I made sure from the photos it was the same duck for the test.