As Pax, I only recall using it once. On a Viscount coming back from Ronaldsway (IOM). So this must have been mid-80s. As I recall, weather was not too blustery but the differnt scenerey outside the window was disconcerting.
I was very pleased when they closed it, as it meant that BAA had reached the status of God (that they always knew they were) and could control the winds ever afterwards.
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"I tell you, we are here on Earth to fart around, and don't let anybody tell you any different." Kurt Vonnegut, Jr.