[Jordan Baker]

Here is what I have imagined the bottom side would look like. I have nothing to support my idea other then I have somewhat copied how the front seat backs are mounted. I went for metal strips as i just can't see wood lasting since it woudl be constantly chipped by the metal brackets.

I tried this out and it does not slip out of the backets when everything is mounted in place. It is also extremly easy to remove to get at the fuel tank and grease gun. The screw hole pattern was copied from the front seat back brackets. On the original brackets they were riveted, however for simplicity I am using maching screws with counter sunk heads and nuts.