Easy question. Hard answer. With or without shoes. In the morning or evening. With a yard stick that has to be moved twice.
In the end, his height is not the important factor. It is his ability to score, rebound, and pass. But we can all agree he is TALL compared to us mortals.
In June at the at the USA U19 tryouts McCoy "measured 6'11 without shoes, 7'0.5 with shoes".... so based on if you pick the shoeless number or how you round, any of those three numbers is valid.