Summary
Highlights
To dunk a basketball, you need to reach the rim at least to your wrist, and preferably an inch or two further down, because you typically dunk on the way down from your jump, not at the peak.
To jump higher, you need to practice jumping. Even in a small space like a driveway, you can work on your footwork. For one-leg jumpers, consistency is key, while two-foot jumpers might find it less consistent. Whether you're a one-foot or two-foot jumper, consistent practice is crucial.
Once you can barely touch the rim, get a tennis ball and practice dunking it. When you're on the court, perform at least 10 dunks with the tennis ball using both two-foot and one-foot jumps. Focus on getting the ball cleanly into the rim, not off the backboard, to simulate a real dunk.
After the tennis ball becomes easy, gradually move to larger balls like a baseball, then a dodgeball, a soccer ball, and finally a basketball. This progression helps you adapt to handling larger objects while maintaining your jumping height and dunking technique.