The worst hitting drill is one that promotes poor mechanics or doesn't simulate game-like situations. A drill that promotes poor posture and an exaggerated chop, for example, can lead to bad habits that are difficult to correct later on. Similarly, a drill that doesn't mimic the actual conditions of a game may not adequately prepare players for the challenges they will face in live game situations.
Another example of a bad hitting drill is one that doesn't allow for individualization or customization based on a player's strengths and weaknesses. Every player has unique mechanics and tendencies, and a "one size fits all" approach to hitting drills may not be effective for every player. Instead, drills should be tailored to each player's individual needs and skill level, with a focus on building on strengths and addressing weaknesses.
Finally, a bad hitting drill is one that doesn't incorporate mental and situational aspects of hitting. Hitting is not just about physical mechanics, but also about mental preparation, pitch recognition, and situational awareness. A drill that only focuses on physical mechanics may not adequately prepare players for the mental challenges of hitting in a game situation.
Overall, the worst hitting drill is one that promotes poor mechanics, doesn't simulate game-like situations, isn't individualized, or doesn't incorporate mental and situational aspects of hitting. It's important for coaches and players to choose drills that are effective, efficient, and tailored to each player's individual needs and skill level.