I have had quite a few sessions on the putting green lately, trying to get the alignment right. What I do is pick out a spot that is midway to the hole on a straight line - and from address try to see the straight line going through that spot. From there I try to adjust the stance, swingplane, flying wedges etc. And finally strike the ball and whatch where it goes.
Be careful about what your spotrepresents. See this post:
Hybrid Mode
