They keep some level or other of salt on the roads all Winter long, beginning with the first freezing precipitation. Great for the motorcycle because it's aluminum and plastic, but horrible for the FiST. Drove under the absolute worst possible conditions last week, which was a warm bed of damp salty road.
I should've hit it the moment I parked it, but instead waited until the following morning/afternoon to put it up on race ramps and thoroughly spray it with Salt-Away, Salt-Off. (actually designed for marine applications)
View attachment 46080
View attachment 46081
The bottom-inside of my hatch shows a lot of bubbling. There are small drain holes around the hatch which I used to spray a crap ton of Fluid Film and CRC Heavy Duty Corrosion Inhibitor into. Hope it helps. Downside is your hands can get greasy when lifting the gate.