In defense of this 1965 footage I would like to point out something unusual which is clearly visible. Adamski's alleged spacecraft has 3 ball-shaped objects underneath, I think most here know what I'm talking about. One of those ball shaped objects, the one on the right, is moving up and down like it is retracting in the ship. Have a look at the footage a couple of times. Does that support the idea that this is a model or does it rule out that this is a model and how could such thing be done at the time
TX, in my opinion, the visual effect you describe is the result of a crappy model part flopping around while it's being waved in the air.