Are there proxies for how ball speed relates to driver distance?
Yes, in general most golfers cannot hit a driver more than 250 yards carry unless they can generate a ball speed greater than 150 MPH. Most average golfers, with ball speeds of about 130 MPH, will carry the driver an average of 200 – 225 yards. Most lower ball speed players (less than 120 MPH) will hit their driver less than 180 yards carry.