1. Do you hit or swing most of your long game shots?
2. Do you hit or swing most of your greenside bunker shots?
3. What is your reasoning for your response to #2?
4. What handicap would you give yourself for greenside bunker shots?
__________________
"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)