To: Helmet Fire. .. .First of all, I’m 71 years old and I can’t spin as described in your post. If I could spin my French Canadian neighbors would think me an idiot. I assume that if I were to release the water bottle when facing my target the bottle would not move towards the target but at a tangent in the direction of rotation. Am I correct?. .. .Now please explain at what point an individual (David or some young Palestinian kid) must release his slingshot in order to hit a target standing in front of him. Remember also (if it makes any difference) the sling shot is not rotating in a perfect circle but in an oval shaped pattern which adds momentum to the rock being slung outward.