[sassgrunt]

As far as gluing down the wood on the trailer goes; I was building a flat rack for the container trailer and had the same requirement. I found that Gorilla Glue sticks the wood down to the plastic joists, as well as the metal on the side frames. Just be sure to stain the wood before you install it, (if the glue seeps up onto the visible surface, the stain won't cover it very well), and also watch for any glue that seeps up and needs to be wiped off right away. Once it hardens, it's very difficult to remove. -Mike