I see these hits all the time in my leagues. For most league bowlers, if it hits the head pin then they think it should strike and get "screwed" if it doesn't. Sure, angle, roll phase, oil pattern, and luck, all play a big part in whether it strikes or not. This would just be a small snapshot of the book. Just putting the pictures of a ball hitting the pocket (1-3), with educated bowlers bowlers on this board making our best guess, would give the reader some idea of how many opinions there are on the strikes. Watching league bowlers, and studying the lady professionals, I am surprised at how well they carry, on half pocket and too deep an angle. Just wait until the book comes out and judge then.