After learning that my WARN winch is not impervious to water, I purchased a cover to keep the thing from becoming seized.

The cover was hard to find because it is so new. 

But I found a local dealer that would order it for me and send it to my house when it came in.  It's pretty good looking and fits well.

 

We will see how well it actually prevents problems...

http://warn.com/truck/accessories/neoprene_covers.shtml