So it came to my attention the last small event we had at Las Vegas (ATD came down, along with 2 other realms) that one of the archers who came down had their arrows fail because they did not have a penny cap.
"What do you mean, "pennying" my arrows... I've never done that."
So following the topic of Metal Detectors....
Do they metal detect arrows at events? Most metal detectors will say what kind of metal is found, which would also rule out the possibility of someone leaving actual piercing arrowheads on their weapons, which has been discovered... :o