Ball bat including ball launch angle boosters

1. A ball bat comprising:

one of a left-hand configuration designated for a left-handed batter and a right hand configuration designated for a right-handed batter, the left hand configuration being different than the right hand configuration; and

one of a left-hand indicia indicating the left hand configuration and a right hand indicia indicating the right hand configuration, the bat extending along a longitudinal axis and including a handle portion coupled to a barrel portion, the barrel portion comprising circumferentially spaced launch angle boosters, and each of the launch angle boosters extending along the axis at an angle of at least 3° and no greater than 12° from the longitudinal axis.

2. The ball bat of claim 1 , wherein the left-hand configuration comprises first launch angle boosters that are angled about a longitudinal axis of the ball bat in a first direction and wherein the right-hand configuration comprises second launch angle boosters are angled about the longitudinal axis in a second direction.

3. The ball bat of claim 1 , wherein the left-hand indicia comprises a first color and wherein the right hand indicia comprises a second color different than the first color.

4. The ball bat of claim 1 , wherein the left-hand indicia comprises a first surface treatment and where the right hand indicia comprises a second surface treatment different than the first surface treatment.

5. The ball bat of claim 1 , wherein the left-hand indicia comprises a first shape and were in the right hand indicia comprises a second shape different than the first shape.

6. The ball bat of claim 1 , wherein the barrel portion comprises a wall and wherein the launch angle boosters comprise barrel wall thickness variations.

7. The ball bat of claim 1 , wherein the barrel portion comprises a wall and wherein the launch angle boosters comprise grooves on an interior surface of the wall.

8. The ball bat of claim 1 , wherein the barrel portion comprises a wall and wherein the launch angle boosters comprise structures mounted to an interior surface of the wall.

9. The ball bat of claim 1 , wherein the launch angle boosters are configured to enhance launch angle of a ball following bat impact.

10. The ball bat of claim 1 , wherein the launch angle boosters are configured to enhance exit velocity of a ball at a given launch angle following bat impact.

11. The ball bat of claim 1 , wherein the launch angle boosters are configured to enhance a spin of a ball following bat impact.

12. A ball bat for impacting a ball, the bat extending along a longitudinal axis and comprising:

a body including a handle portion and a barrel portion, the barrel portion including spin enhancing structure for facilitating a batter's ability to impart spin on to the ball, the spin enhancing structure including a plurality of grooves formed into the barrel portion of the bat, the grooves extending at angle within the range 3 to 12 degrees with respect to the longitudinal axis of the bat.

13. The ball bat of claim 12 , wherein the spin enhancing structure includes a barrel wall thickness variation around a circumference of the ball bat.

14. The ball bat of claim 12 , wherein the grooves comprise a groove having a characteristic that varies as it extends along the longitudinal axis.

15. The ball bat of claim 12 , wherein each of the grooves comprises a first segment having a first dimension and a second segment having a second dimension corresponding to the first dimension, the second dimension being different than the first dimension.

16. The ball bat of claim 12 , wherein the ball bat is designated for a right-handed batter and wherein each of the grooves extends from below the longitudinal axis to above longitudinal axis in a direction away from the handle portion when the longitudinal axis is horizontal.

17. The ball bat of claim 12 , wherein the ball bat of the designated for a left-handed batter and wherein each of the grooves extends from above the longitudinal axis to below the longitudinal axis in a direction away from the handle portion when the longitudinal axis is horizontal.