The string walkers I knew were very aware of the point of the arrow when they were shooting. A longer arrow brings the arrow closer to the bulls eye. Of course in the end it all depends on your bow and how use you use it. The place where I feel that an extra long arrow is a detriment is when shooting a self bow or a Hill style bow (as far as the grip and the sight window are concerned) is when shooting wood arrows with split finger standard shooting. I always cut my arrows 3/4" longer than my draw to the back of the point, at John Schulz's suggestion that I try shooting net length arrows for blunts and target shooting will help with form control, arrow flight and overall accuracy and even though I was skeptical at first, I was amazed how solid the shorter arrows flew when pulled clear to the tip and how much more confident I was in my form and my aim. I am not sure that the theory works for some carbon arrow set ups, when the goal is to get a low enough spine to get the arrows to fly straight, going to net length requires a a slightly lower spine shaft. with longbows I have never really noticed that changing from net blunts to broadhead really makes that much difference, the eye adjusts for this with just a couple of practice shots. For those that say it makes a huge difference and still say that do not see their arrow are kidding themselves, see their arrows, just like stringwalkers, where the whole point is to see the arrow.