SDN Members don't see this ad. (About Ads) BR mentions Backspin in its practice tests, but never explicitly says how it affects the ball. 1.)I know that it increases Height and Flight Time. But does it affect radius? Also, I understand that the dimples on the golf ball allow it to create a greater pressure difference between the bottom and the top of the ball. 2.) Is this true for a regular backspin, or is this pressure effect exclusive to dimples? Basically, do the dimples on a golf ball introduce new elements to the ball's backspin flight, or does it just exacerbate properties already there? 3.) Does anyone know what the flight path of a regular backspin cannon ball will look like compared to a normal cannon ball launch?