I have long been curious as to why the polymer lights on my boat
become cloudy relatively fast, whether near the sea or not & whether
under cover or not. It polishes off fine with a bit of work, but I
never see this occur in other acrylic or lexan windows I have around
my place, and it is a minor annoyance. Is there one particular type
of clear polymer which clouds up like this? If left for months, they
will become only translucent until repolished.