Right now in my 85 longbed I've got just an old rubber mat on the floorboard but it slides around and it's just a mess.. I'm thinking I would like to get (unless anyone strongly recommends against it) a tough black spray on/roll on type liner similar to the Rhino liner in the bed perhaps. Floorboard will be getting worked a little on the farm with scuffs and occasionally the dirt and mud so I don't want a shiny polished look. Something that helps protect against rust would be a bonus, but isn't entirely necessary if it's not available without jumping off the deep end of the price pool. Does anyone have any recommended products to use?