Kino,
You better watch out you might start a new trend of practice in Scotland if people see you hitting in your bare feet!!!
This is a great drill. I had all my high schoolers doing this on their last practice. Many made the same comment you did. It's a great revelation. Congratulations...
With any correction give it time to set in, it can't be a once and done thing. It takes 21 days to make a new habit. So doctors orders, take your shoes off for 21 days and call me in the morning!!! (LOL)
Good luck Kino, when you have questions just post!!!
GolfBald