I dunno who would ever try to pass those lines off as the spine (has anyone?) but I wouldn't.
I don't think the green line is right either tho.
(any spine experts out there??)
I'm not such an expert, but I think Mathew did as well as can be done in 2 dimensions.
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"In my experience, if you stay with the essentials you WILL build a repeatable swing undoubtedly. If you can master the Imperatives you have a champion" (Vikram).
The reason you can't sustain the lag is because you are so eager to make the club move fast (a reaction to the intent of "hitting it far"). So on a full shot you throw it away too early, which doesn't happen for your short chip. (bts)
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