I had the same issue with not knowing where my miss was going to be (specifically with driver). My ball flight when I am swinging well is almost straight but with a little draw. Off tee I was missing all over the place with a lot of severe blocks to the right. I tried several things, relaxing grip pressure, ball position and height, wrist cock, messing with my grip (bad idea) etc.. Finally I read Hogans 5 and I took from that a full shoulder turn left arm as straight as possible taking it back, then hips, shoulders, arms, hands to impact. I absolutely do not think of all of these things while swinging, I just make sure my upper arms are snug to my body (but not tense) and turn until shoulder is under my chin then I clear the left hip. My one swing thought is head stays behind the ball through impact, this works very well for me with irons. I still miss hit some drives, but the good is outweighing the bad and my misses are usually not off the planet and they are predominantly to the right. Every other round I might get excited and snap one left. I am always good for one or even two triples in a round and they are usually a result of hitting three off tee. If I have a tight tee shot I can aim up the left side and hit a kind of weak fade. It is not as long as I know I can hit it, but I have extra confidence over the ball as long as I make that full turn.
