I think that most are using GH. Dosing depends on the individual, how much can he afford and how much of a benefit does he see from GH. Some guys are using a ton per day, while others are ising 3iu to stay leaner while dieting. For the most part, a good pro is going to be a pro regardless of the gear he is using. Its just what his body was designed to look like. Then gear and GH is going to take that look up to the next level.