On a semi-serious note, something I have never seen before, but without knowing what you are using the trailer for hard to know what you need.
https://www.pjtrailers.com/options/blackwood-lumber/
Myself I would probably consider Rusty's Diamond Plate approach.
Best advice
Hook up with FLL he' s got a brand new to (himself) "blue" makita saw he's dying to tell us all about.
Maybe in exchange for use of the saw you could tutor him on how to spell.