My first thought would be that you are getting fletching contact. It could be that your rest height is to high and your nocking point is to low so when you shoot the fletching makes contact and causes your arrow to hit the rest and kick it up which is causing your severe low point high fletch tear. Check to see that your arrow is centered over the rest mounting hole when your rest is at full height and that your nocking point is set at around 3/16 fo 1/4 on a hoyt. You can spray some foot powder on the back of your arrow to use as an aid in determining if you are getting contact. Hope this helps you out and good luck.