Andrew Manning said:I think you've got less margin of error in the aiming of this shot than a 12' straight-in snooker shot (CB in one corner, OB in center table).
andrew, it has nothing to do with "margin for error"' it's plain old physics. you have two identical round objects both contacting on identical points to a semi pliable stationary object on the same line plane separated by a determined distance. when one is struck towards the other it will immediately pull away the straight plane object (ball) because of the friction crated by the round object (ball) and staight plane (rail). the path is no longer "in-line" and must be curved back to center. because of the small amount of force needed to make this shot draw is not a viable option for position.