My experience with narrower broadhead designs like Hills that single bevels has given me a much keener edge easier when sharpening with a file than standard bevels of the same dimensions using a file. Still, if in doubt, I recommend Zwickey broadheads they sharpen with a file or any other method real nice. I started out matching fletch with the Grizzlies when they first came out and sharpening them exactly how the slip on the package said, that worked great. Back then no one was talking about matching fletch, I did it because I was afraid they would not fly straight, later I found that for accuracy, it did not matter, so I went either way and found that for deer I did not see any difference. All that said, the science says that matching is better, so if you have a choice match them, but I would not go nuts over it. My wife killed a bunch of deer with a 38# @ 26" bow and never had a penetration problem doing it wrong, about as well as her Zwickey Eskimos, she always managed to get the arrow through the deer,except for one that stuck in the far shoulder joint, but the entire arrow was inside of the deers body. This year she will be shooting matched, just because they are available.