yup deep hook, the string actually rotates in the nock towards the bow, holding the arrow on. (a can't pinch tab might help too?) i had the same problem when I started, but when I learned to reach around and 'set' the string, the problem went away. Before even beginning the shooting process, I am holding the bow with about a 1/4 inch to 1 draw, what I call 'set'. From nocking the arrow to release, it never has a chance to flare out, because it is pressure sealed.