Golf swing and club head movement- not an arch but a straight line at the impact position
understand- all arcs are made up of strait lines, bigger the arch bigger the strait line. with the axis changing due to weight shift
the straight line gets longer. meaning 3 inches before 6 inches or more after the club face move square to target line.
that is what strait hitters are doing. result 100% sure strait ball .
Thinking of an arch at impact position is suicidal.