This is a great clip of a NSR150SP in the floods we had a few years ago, this guy has fitted a snorkle that extends to the top of his fairing and also fitted a exhaust pipe extension in the shape of a rubber hose.
http://www.youtube.com/watch?v=GEcWeZsW4cA

Fantastic, amazing what a bit of ingenuity can do.
And we think we get flooding here in the dales.
Fair play, hats off and all that.
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stink wheels forever.