Ernie Els

You should never get set over the ball and then aim your putter face. If you do it in that order, you can easily lose sight of your intended line. Instead, aim the face down your line first, then settle your body into position.

From a good lie in the middle of a fairway bunker, I'll make the same swing as I do from an average fairway lie. I'll dig my feet in slightly and keep my lower body stable so I won't slip, but I don't change my club selection or setup. It's only when the ball is sitting down in the sand that I'll make some modifications.