In searching "sit down" as a follow up to Daryl's awesome post regarding its importance...I found this thread unanswered...maybe we can restart this one
I hate the term "sit down". For me it ranks right up there with the "lawn mower pull" to describe the right forearm takewaway.
To get to the "sit down" position I just think about turning my left hip counter clock wise after a slight bump (weight shift to the left foot) during the backswing/downswing transition.
If you think "sit down" trust me you will sit down which leads to BOBBING and all kinds of bad things.