Originally Posted by Pauls888
Does the tuck bed liner help?
I believe so.
It's got enough 'flex' to absorb small impacts from road crap.
Like I said, it's been at least 3 winters since I put the Curt hitch on my wife's RAV4 (V6 with 3500lb towing, nice!) and I haven't seen any rust on it. We've seen similar year RAV4s with aftermarket hitches covered with rust.
Make sure you sand the original paint with some high grit sandpaper to rough it up so the liner material sticks, Walmart used to sell black or white spray cans of the stuff, but I haven't been able to find it lately, so the next best thing would be to buy a small can of the Herculiner stuff.