Like rsbwjohnson, I remove the middle headrest and put in storage under the seat. My hitch head is not visible due to my sliding bed cover but I found if I aim right for the center of the two headrest mount points, it puts me pretty much dead-on.
Mike, Sue, Sissy and Little Man
2015 Ford F350 Lariat FX4 6.7 CC DRW
2015 Eagle Premier 351RSTS