I hear a lot of complaining about this by the the offender and to the offender by others “in the know.”
I then see and hear people actively trying to keep their right foot flat through the swing. Guess what you are doing to yourself? You are cutting off you hip turn. This is another in a long line of “body restrictions” that people are imposing on themselves that doesn’t work. Actually it hurts. Your are not supposed to “keep your head down” or “restrict your hip turn.” Trying to keep your right heel flat falls into this category.
Get in a golf stance without a club and rotate the hips as if you were making a downswing. Feel the right knee bend and drive toward the target and the right heel come off the ground. That is natural body mechanics and if you fight the heel coming off the ground, the hips won’t clear properly and you will slow your rotation.
Like most things in the golf swing, a floundering body part is not what you fix and force to work correctly, you find out what other body part is is creating the problem.
For example I did a video saying restricting hip turn is bad. All you have to do is turn the shoulders properly and the hips will turn the amount they are supposed to. Again, it’s not about forcing the right things to happen, it about avoiding the bad things and allowing the right things to happen automatically.
The right heel coming off the ground too much is sometimes a balance problem, a changing spine angle problem or the back foot being flared too much and the right knee driving out from the hips instead of toward the target…or any other number of infinite problems for infinite body types.
The hips leading too quickly out of sync is a big one too. However, you don’t solve this by trying to keep the right foot flat, you solve this by getting everything to turn in sync.
I am sure some of you can come up with a few others I have missed.
The important issue is, don’t fight it and try to keep it flat. You are masking the real problem with another problem.