[Yoda]

Is it ok to substitute driving the back knee toward the inside aft of the ball instead of the hip slide?This just feels more natural to me and seems to keep me from overdoing the hip thing.I am trying to keep things fairly by the book and dont want to create anything to compensate for.

Do not substitute Knee Motion for what is properly Hip Motion. The work of the Knees is to keep the Head Stationary, and any unnecessary movement of the Knees jeopardizes that assignment. The work of the Hips is to pull the Right Shoulder Downplane.

Substituting a Knee Motion for what is properly a Hip Motion is, at best, befogging assignments. At worst, it is a Pivot disruption with geometric consequences; namely, the failure to Slide results in a failure to tilt the spine -- the Axis of the Shoulder Turn -- and therefore results in a Flat Downstroke Shoulder Turn (10-13-B-#3) that inevitably takes the Hands Off-Plane during the Start Down.