Greg, sliding is something I have an issue with, it is weird because sometimes I am pivoting good and other times I slide too much. ON tape my left hip will be about six inches past where it was at address, at impact. Not enough turning, too much sliding. IN looking at your wall drill, do you want the weight over top of the left foot or a little on the inside of it? on the back swing we load into the rear foot, not over top of it.
thanks