Thats not to shabby of an idea... now as far as a prefilter, is that in the sense of the stock filter and then one more at the top??
I was just talking to my buddy and he actually had a suggestion, he said that they make what are called " Water Socks"... i guess what they are is oil filled "socks" that go over your stock or after market air filter, and what they do is shed water as it hits the sock.... So what i was thinking was putting a sock (probably pantyhoes) over the top of the inlet valve (the snorkel head) and putting K&N oil on the sock....making it "Water resistant", just mainly from any rain or mud splashes...
military_stang