"Messengers flying everywhere" are due to two things:
1. Entry Angle
2. Ball Speed
If you don't have sufficient entry angle, you don't get the head pin bouncing off the side at an angle that will stay on the lane and take out other pins. If you don't have sufficient ball speed, no angle is going to help you - best you can hope for is what I call a "UPS" - it just rolls up slowly and delivers the package. You must have ball speed for "air mail" messengers.