So you are struggling with your putting. You are struggling with the stroke you want to make because you have read a lot of different publications and you are under the assumption and opinion that there are two different philosophies in putting. You can putt either with a straight back and straight through stroke or you can putt with an arc stroke. Which one is correct? I am going to help you make up your mind. If this putter shaft went into this putter head at right angles and you set it over my target line this club should swing straight back and straight though because the shaft goes into the head at that right angle. The problem is that is not how the shaft goes into the head. If it did then the club would sit on the ground just like this. You can see the toe is on the ground and the heel is well off the ground. When you sole a club correctly now the club is sitting the way the manufacturer built it to sit. Look where the handle is in relation to where the target line is. It is well to the inside. That tells you that this club should travel on an inward to square and back to inward stroke. Let me show you from a side view. I am going to move over to the side and I am going to lay the club down flat on the ground. I am going to hold the handle and I am just going to make a stroke. Watch the clubhead. Don't we wish we could all putt that well with the club sitting on the heel. What you saw the club do is work inside the target line, to on the target line, to back to the inside. Why? Because the lie angle of the shaft dictates the direction of the stroke. How much it may go in and how much it would not go in. When you are practicing your putting if you are wondering whether or not you are going straight back, what I would suggest that you do is put a club on the line, I have a white line on my putter head that I am putting right over the blue line, now move that right back to the end of your line. At that point put a tee in the ground. If I take this club straight back and straight through the toe of the club is going to brush against the tee. On the other hand, when I put the ball up here on the line and I get set, if I am stroking it correctly according to this lie angle I don't even know that tee exists. Because the club worked inward, on and then back to the inside. Just the way it was designed by the manufacturer to work. Straight back and straight through is perfect if we are playing croquette, but we are not.