If your boat is moving a little bit.the 360 will be clearer than if the boat is completely stationary. (Once structure is located,a slight movement, port to starboard or starboard to port will result in a clearer picture of the structure.the speed settings on the 360 will affect the quality of the view also.(don't run the 360 to slow, especially on larger objects that are farther out) they will blur more.(try to keep your sensitivity setting as low as you can stand it.