At Bonneville I sure want a fender to keep the flung stuff a bit more under control. I usually put some duct tape on the radiator where the flung salt hits it -- and remove the tape after a run. It's much easier and quicker than trying to wash the accumulation of salt out of the radiator. My fender doesn't go all the way down -- I'm still using a stock one, sorta like Bill's in appearance -- but might put some type of mudflap down there if I need to control the salt some more.
