I've heared some mixed reviews on rain-ex, and it never worked on my sheild when i tried it. Something to do with using it on plastic, not glass. My answer is a product i got from a hockey shop called Fog-off. I don't think they have much hockey in the UK, but they do in Europe. It's by far the best i've tried and made for the same material as our sheilds are. It lasted a long time, up to three strait days of rain on one of my previous trips.
...BTW, you would look incredibly silly with one of those contraptions strapped to your bucket!!!
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