[gburlison]

Update #1 states"

A. Exception: solely for the purposes of determining compliance with the
weight and volume limitations, these items are NOT considered part of
the ROBOT and are NOT included in the weight and volume assessment:
• The 12V battery and its associated half of the Anderson cable quick
connect/disconnect pair (including no more than 12 inches of cable per
leg, the associated cable lugs, connecting bolts, and insulating
electrical tape),
• BUMPER assemblies that are in compliance with Rule <R08>,
• The TRAILER,
• The Trailer Hitch (as defined in Rule <R18>),
• The OPERATOR CONSOLE


I would not permanently attach the trailer hitch and be prepared to take it off for an inspection. It is possible that the inspectors will know how much a properly constructed trailer hitch weighs and that they might subtract it from your total weight, but I doubt it.