We do both, dont care, if they land on the water it means they finished, sure is better than folks out there skybusting or shooting above their skill level. A lot times when them swim into the spread or coots, we'll let them dive in order to get our guns ready, and when they come back up its on. We also hunt over very expensive decoys so try to be careful not to hit them. They taste like crap whether you shoot them on the water or in the air.