There are a few things you can do to improve your alleyooping skills in 2k15. First, make sure you have the right tools. You need a good alleyooping tool and practice to be successful. Second, make sure you are using the right height. You should use a high height to increase your chances of hitting the ball squarely. Third, use a good surface. A hard surface will help you control the ball and make it more likely to hit the ground cleanly. Finally, practice often. The more you practice, the better you will become at alleyooping.