[YodasLuke]

"Holding on" will keep you from applying Maximum #1 pressure. That's the way that I thought of clubhead lag for years. In fact, that's what I was taught.
You can quote me on this:

"LAG PRESSURE IS CREATED, NOT SOMETING THAT YOU TRY TO KEEP"

You really have to learn to DRIVE the #1 pressure point. I've given this advice a number of times, but it really works for most:
Place a penny in between the #1 pressure point and the left thumb. Try to keep the pressure applied against the penny during the whole swing(hit). Make the #1 the direct drive and allow the #3 to recieve the indirect pressure. MANY try to make #3 the direct drive, and in the end, flatten the right wrist.