In a way i agree with both of you, paper tear will give you a starting point granted.I have had great paper tears, don' t like to call them bullet holes, and then go outside and shoot and the arrow looks like a porpoise going toward the target.Why did this happen after shooting a perfect paper tear? I was not able to answer my own question and that bothered me. So i went back to basics, got my center shot right, height adjustment or nock point right, checked tiller, have right shaft, and guess what? 9 out of 10 times arrow flight is great. And the other gentleman is also correct, it is hard to see an arrow going 300 ft. per. sec. at 20 or 30 yds. but at 40,45,50,60 yds. it gets easier. Granted you may not be accurate at that distance but you can see the arrow flight.