If George is to settled he thinks to much and misses.
If he's going flat out or at extreme pace, his mind can't keep up with his body and he misses.
If he's moving not to fast, not to slow and his mind stays with him he will kick them.
In the GF, his mind couldn't stay with his body, this effected his goal kicking but made him outstanding in other areas.
I might nick name him Goldilocks because he needs to be moving, not to slow, not to fast, but just right to be an effective goal kicker.