I cut the rubber hanger and then cut the tail pipe off just enough to get to the hitch bolts. The hanger at the muffler is close enough to support the tailpipe without the rear hanger.
This would not likely pass a strict safety check though. It does help prevent you from digging in and folding your tail pipe around your axle when offroading though.
I also run a gastank skid, so I'm not worried about melting the plastic cover for the tanks itself.
The solution to run 100% stock is to remove the hitch(if present) and frame rail nutserts and either replace with new or drill and tap out when out of the vehicle.
'00 XJ Sport, White - almost done for now...
'11 Town and Country - people mover :-(
'88 XJ Up Country, '01 XJ Sport, '08 KK Limited, '98 XJ Parts Donor, '07 XK Limited (the Stall-ander)