I picked a few of them up a few days ago, but still have not tried them. They are suppose to be used in place of fletchings. I would think that using flethings with them would hamper their flight. I bought the hunter size. They are 50 grains though, so take this into consideration. I would suggest that they be used with a drop away rest.

Another thing that I didn' t not know when I bought them, is that they have to be shot off a string because of the way the nock is shaped. You wouldn' t be able to use them with any type of nock aligner on the string.