How Much Data Do You Need to Measure Your Golf Swing?

An electromagnetic system can measure six degrees of freedom and provide an instructor with more valuable data on the golf swing. One question i think worth discussing is, how often do you need that much data? I would say that i use three d day and day out as as a feedback system. It's something as simple as setting up an acceptable range of address posture for someone, you know. And i'll have bio fe back tones on. So all they have to do is just make sure that they're in the right position that they'll hear a tone. That type of feeback is just shown to me to be far more effective for expediting the learning process.