First I placed a 3.5 foot 2x6
on top of the hitch
height adjuster and
traced the square hole.
Then I cut the hole out so it
sungs onto the metal with a short support on each bottom side.
10 inch decking boards go on
the sides to act as a wall and to have a place for the eye bolts where
the bungee cord gets secured.
19 inch decking boards are
used as the two extended supports with a 2x4 to level it out.