Originally Posted by zoic
I switched to interlocking the pinky and index finger about 10 years ago. It was a bit of an adjustment at first, but I found the following reasons and improvements were notable:
I do not grip the club too tightly anymore.
I do not break my wrists, or turn then all over the place causing hooks and slices
I do not swing as hard, since I am trying for a nice easy smooth fluid swing, instead of a homerun
The club does not seem to move around in my hands anymore
This week I was drawn to trying it without the interlock, so I could position my right hand underneath a bit for a controlled draw on doglegs left. It felt so foreign after I few practice swings I just decided to stick with what was working, and an obvious improvement to my game since the changes.