Using Scotch Blue Painters Tape, I cut two squares, just big enough to cover the BN logos. One on the front, and for variety, one on the side. I wanted to make it look like the company that had bought the trailer, took a piece of sheet metal and covered the logos, then painted the whole trailer. Somtime later, both pieces of sheet metal were ripped of, or fell off.
Since the trailer model was already built(some years ago), I masked the wheels and landing gear.