The FAA calls them view-limiting devices, or VLDs, but we call them hoods. The concept is simple: In visual conditions simulate instrument conditions by restricting the pilot’s view to only the instrument panel and nothing outside. Who among us, however, hasn’t had “the hood” on and still snuck a peak outside? So, no matter how much it restricts your vision to the sides, you can always turn your head just that little bit and get a fleeting glimpse of the visual world beyond the instrument panel.
But, if you want to simulate instrument conditions in the actual airplane, other than impractically blocking the windows themselves, the best option is something you wear that restricts your view. Although simple in concept, the perfect hood remains elusive. Nonetheless, any of the products reviewed here are effective at their primary purpose of restricting your view to (mostly) just the instrument panel.