I just place a metal pipe on the ground with cotton twine tied to it. Then pull the twine up the side of outbuildings and attach for the veins to grow on.
I can't think of a delicate way to say this..but Morning Glories seeds are called the poor man's LSD so animals or humans being able to get to the seeds is something to be considered when picking a location.
I had no idea of this connection with them, as I have them growing everywhere. Someone jokingly told me last year, then I started looking into it more...eeegads.