I haven't used HIT methods yet, but I read the book "Training for Mass" by Gordon LaVelle. www.amazon.com/Training-Mass-Second-Gordon
I think it's worth a try, but I cannot do it yet. First, I'm doing P90X for now. Second, I think I'm going to try a bit of volume training before HIT. I could see myself going a round of HIT within the next 6-9 months.