I wear a lot of fedoras. Not all the time for archery, though a lot recently with the cold weather. I shoot vertical for the most part. I cant only at close distances 25 yards or less. The trick is to get a good quality thin beaver fur hat that is at least 4 or 5 X 10 X would be the cats pajamas. Those hats are egg shell thin. They almost decieve you how something can be that thin but have no problems. When the string hits the brim it just pushes it down. I have thicker fedoras and the string moves the entire hat if it hits the brim so those I do not shoot with. Taking a longer draw can be a prob too. If I were to draw well past my cheek well then the brim would push far down and impare vision. Having the brim shaped so it slopes down helps too, though I can't imagine a fedora without a sloped brim.