Many of my shots are weak fades/slices. But from time to time I feel that I have made a good shot. It's long and straight. But the divots go out to left as usual - maybe as much as 20-30 degrees. Why does then the shot go straight? What determines whether a shot is a slice or straight when swing path is the same? I'm not talking about pulls - that I understand - it's the straight one that puzzle me.