What a great thread. I started playing golf last May seriously. I play about 3 rounds per week as weather permits (I live in Ohio where we really only have a 8 month-ish season.
From last May to September, I used a 10 finger grip. My thumbs point point down the shaft. I started to establish my handicap 4 months in and settled in at a 16. I played baseball at a high level through high school, college and 6 years after college. My friends told me I picked the game up quick.
Then, wanting to start breaking 80 and shoot in the 70's, I bought lessons to fine tune my game. I listened and did everything my pro told me to do to the best of my ability. The first thing he told me was to change my grip to the overlapping or interlocking (whichever I felt most comfortable with) because he said that I would never shoot in the 70's with my current 10 finger grip so I changed. I finished the season last December with a 19.8 handicap. I wasn't very happy that my handi went up with lessons. I figured it took time. So I practiced when I could during the winter months. I played 6 rounds of golf this year. My handi went up to almost 21. Shooting high 90's and once over 100.
I finally said SCREW THIS INTERLOCKING!!!!! After my drives were flaring right right right right and when I did hit it straight I was losing 50 yards. I was only hitting 230-ish down from 280-ish.
I have played 3 rounds this week. 84-87-86. Pars and sometimes a birdie are now back in my vocabulary.
Needless to say I am back on track and smackin it 280+ again and my irons are better. Yes, I get too much right hand on some shots and have developed a draw on my drives that sometimes is a hook, but now, 85% of the time, Im hitting the fairway or missing slightly left.
Moral of the story, I think we've all heard it. Do what feels comfortable for you. I know I am going to keep the 10 finger and fire my pro. I dont care if its for women or juniors.