I made this a few years ago to expand the capacity of my small motorcycle trailer. It is sized to carry my small cooler or 4 umbrella camp chairs. The frame is angle iron with an expanded metal floor. I cut the bolt tabs off of some small tie down cleats and made them "weld on" cleats. Two ratchet straps and you can lash just about anything you want there (as long as its not to heavy). This was made with my small Lincoln Mig, and bolts to the tongue of the trailer. Not elaborate, but handy as heck.
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