Yes it makes ripples very good plus splashes, I often add a spreader group of 4 or 8 and a bungee cord so that each pull moves lots of decoys. I have to warn you about dogs and all the jerk cords, they can get tangled! I train my dog to handle around them.
I have made several decoys before they were well known. I made a goose decoy that flapped real goose wings about 25 years ago. Then I made a radio controlled duck decoy about 25 years ago. I was crushed when batteries became illegal. I had duck 2 swimmers that did circles, added a radio controlled goose, and several duck butts that had wiggle balls in them to add ripples to feeder spreads.