The developmental period that is entered at about 35 to 45 years and exited at about 55 to 65 years of age. middle and late childhood. The developmental period extending from about 6 to about 10 or 11 years of age; sometimes called the elementary school years.
HOW TO GET MORE SPIN FROM YOUR WEDGES I recommend you get fit with a set of high-spin box-grooved wedges. Combined with a quality wedge swing and a urethane-covered ball, you'll max out your Backspin Equation and get the shot-stopping power you need.
The curve ball, or half-masse shot is performed by elevating the butt end of the cue around 45 degrees and striking downward at the cue ball, hitting left or right of center. The two main factors that will determine the path of the cue ball are: 1. How hard you stroke. 2. How far left or right of center you hit the cue ball. With some experimentation, you will begin to get a good feel for how much the cue ball will be pushed off line and when it will curve back in the other direction. Bear in mind, there will be some differences in using a heavier cue ball, such as on a coin-op bar table. It's really a very handy shot.