Heres another one to try cut out a 4" * 4" square from 2 lit. pop bottle and black tape it to top of lnb overhanging eye face and slightly pointing up works for me to keep rain off eye face, the bag trick worked for me also as long as the wind is strong enough to move the bag and flick the rain off the bag, if it just laying on the face of the lnb usless in my trials. might be something to try. Cost Free.
Be interesting to see pictures of that! Sounds like a hecka good Idea!
K E V I N