we use these in all of our spreads and they work great. Only motion decoys we use. I have a mallard machine but they can get cumbersome. You have a remote switch you have to operate, you have to hook the decoys up every time. These pulsators you just have to switch them on and go. They can operate in 10-12 inches of water but not much less, you will suck a much of mud and silt in the impellor if any more shallow.
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