Throwing a good bowling ball is easier than most people think. So for a casual bowler, it’s easy to think throwing it directly in the middle is the best way to go. However, that usually ends up in a split so the best approach is to rather hit the pins a little bit to the side. More specifically, hit at around board 17.5 to hit pins 1, 3, 7, 9 to create a domino effect. So this is obviously tough because you need to aim for a spot smaller than a dime. However if you hit it from the side, that then widens the target significantly. To do this, you need to curve the ball so it hits the pins at an angle of 6 degrees. This is done easily by utilising the oil laid out on the first 3/4 of the track to rotate the ball fast enough so that when it gets to the unsoiled final 1/4 of the track, it hooks dramatically. However, you need to take into account the displacement of the oil due to bowling balls interacting with the oil as well as the oil layouts of certain tracks. You need to adapt to these circumstances, never throwing it too far outward or too close inward to avoid any unwanted friction discrepancies. You can study the common oil layouts of bowling tracks all named after animals in your spare time. You also should take into account the inner weights of a bowling ball by estimating its radius of giration and then its moment of inertia. You can estimate this more effectively by letting the ball spin on a cushion of air until it settles on is heavier side using $2000 hardware. Once you calculate this, you want to throw on a spin somewhere between the minimum and maximum moment of inertia. This is made easier if you get a manufactured bowling ball with rad-4 cores because of its preferred spin axis. Its also important to account of the surface material of your bowling ball. The top 5 most influential factors of a ball curve is the amplitude of surface roughness, the coefficient of friction in an oiled lane, surface roughness by spacing. The coefficient of friction with a dry lane, and how quickly the ball surface absorbs oil. This is why its important to stay up to date with manufactured bowling ball technology as it could mean the difference between winning and losing a strike. But remember, the direction of your ball can still be impacted by hundeds of other factors like the colour of your ball. So as long as you keep that in mind, you will be able to throw a good bowling ball.