Keith,
I attended Bob Wesley's school in 2006.
He is a great instructor, an excellent shot, and a fine gentleman.
His school includes good shooting form, indirect aiming, and developing a perfect practice routine.
He likes, teaches, and shoots 3 fingers under, especially for 3D competition and for tree stand hunting; but he certainly knows split finger shooting and the difference between the two.
IMO Bob Wesley, Rick Welch, and Rod Jenkins all teach more target style shooting.