The clear plastic is always kind of a problem. One thing I have found that does help it out in general is KIT scratch remover (find it in the auto section at WalMart). Takes out the dull look quickly and it's easy. I put rain-x on the outside and the fog stuff on the inside of my glass windows. The Rain-x works well, but I think washes away kinda easily. The fog stuff works, but I think comes off easily, too.
Yes driving into rain at high speed will force a bit of water in at the very base of my swinging window. But, I can just move my leg out of the way....Hey...your supposed to get a little wet and cold...you're a fisherman...not a computer geek,,,,,oooops...I'm on the computer, huh