Hello Kimsut!
Very good question my friend! Although there are several things that must come together in order to have good trapping skills, I would have to say that energy/sensitivity drill training is the most important area of training for development of strong trapping skills! It is the development of contact reflex, which comes from energy/sensitivity training, that lets you know when and if trapping is necessary, and which trap or traps to use if so! In other words, the "when" of trapping.
Reference point trapping drills teach you the mechanics of both simple and compound traps. Mook Jong training economizes your structure and strengthens your trapping movements. Springarm training develops your ability to "stick" to an opponent and follow sudden, radical movement changes. BUT, without energy/sensitivity training, you just cannot reach the height of trapping skill, which is to trap at exactly the right moment, using exactly the right movement! That's my two cents worth on the topic!
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