imported post
i used a plasma cutter, and cut a hole through an old receiver hitch, then welded a socket at a slight angle in the hole. (so it could be welded from top and bottom, and the flag would clear the top compartment). then for the pole i used a 6 foot piece of black gas line pipe---1/2 inch worked well. i drilled two hole in the pole to mount eyelets for the mounting of the flag. (i used key rings to mount the flag to the eyelets). i also discovered that the distance between the holes on a 3 by 5 flag differs on different brands of flags. anyway, on the bottom of the pole, i cut the threaded end off. on the top i left the threads and installed a cap. i drilled a hole through the socket and pipe and installed a pin so as not to lose my creation. for the top, a small bungee cord is used for extra support to the luggage rack. also, the inside of the socket has the hex...but deeper inside the socket, it is round, and it fit the 1/2 inch black pipe perfectly. i use 1 flag, but it could easily be modified for 2. i will try to post some pics.