[bts]

Once you have completed your backstroke and your left wrist is fully cocked, do you keep your left wrist cocked with left arm muscular effort during the downstroke until release? Years ago I once asked my AI this because he was empasizing loose and supple wrists. He said no! I don't think I believe him.

When I begin my downstroke with a fully cocked left wrist, I get immediate throw away especially with extensor action being applied. I feel the lag only on the shortest of short chip shots. Are loose and supple wrists just golf digest bs? Sorry for the rant. Whatever the answer is, it is probably obvious to those who can sustain the lag. For those of us shooting 90 or above ( which must be 98% of golfdom) it's not so obvious.

To recap, should muscular left arm effort be used to sustain the left wrist cock during the downstroke? Yea or Nay?

Yes, definitely!!!!

How're you gonna pull against something ("lag" ideally) without muscular effort, not just the left arm, but every skeletal one.

The reason you can't "sustain it" is because you are so eager to make it fast (a reaction to the intent of "hitting it far") , instead of sustaining it, that you throw it away too early, which doesn't happen for your short chip.

You can (sustain it), if you intend to. Can't find any better example than the above, if that's not obvious enough.