Just curious, but as I get better with my duck call I'm trying out new techniques/sounds such as the cajun squeal and bouncing hen. Are these useful when hunting over water, or since they simulate feeding ducks would that be better suited for land based waterfowling? I'm hunting central Iowa, so there's plenty of corn fields around. The places I hunt are primarily marshes with plenty of food in the water, but am hoping to be able to hunt some fields as well. Thanks!