You probably already know what a good grip looks like. You've seen the videos. Thumbs here, knuckles there, V's pointing at the shoulder. But you can't run a mental checklist on 70 shots per round.
What actually builds consistent contact is your hands feeling the correct position automatically — through physical repetition, not conscious thought. That's what a molded grip trainer does. It gives your hands a reference point they can learn from through touch.
Feel builds consistency. Thinking about it doesn't.