"The majority of the weight should be on the heel, and it is better to
turn on one's heel than to roll excessively. Address Position loading of the
Feet is even distribution between both Feet but with enough on the heels to
allow the toes to be lifted up momentarily without altering the distribution
between the toe and heel."
But the weight on the heels doesn't stay there, like the discus the weight is transported to the toes after impact. I don't want people to think the swing is flat footed.
As Bobby Jones once wrote, "There is no virtue that cannot be exaggerated into a fault."
Per 7-17, the Address Position loading of the Feet is an even distribution between both Feet but with enough on the heels to allow the toes to be lifted up momentarily without altering the distribution between the toe and heel.
Throughout the remainder of the Stroke, the player's sense of balance and force rules. Per 1-L, "Off-balance force is notoriously erratic. The mechanical device has no balance problem but the human machine does, and mastery of the Pivot (Zone #1) is so essential for good Golf. "