You'll probably find that you can get a better arch if you arch before you have the bar in your hands. Once you know how to do it, if you have a good hand-off person, do it first. You may find that once you unrack, you still need to re-set the arch a bit. We're not teaching a silly, massive, powerlifting-competition arch that some very flexible people are capable of, just a moderate one to improve the moment arm situation a bit. Remember the art of manliness videos are Rip teaching a first-timer the lifts, and he has to get the guy to do the damn lifts correctly, not lecture him for 1,000 hours about setting up properly. I hope that helps answer your question.