RE: What goes through your mind at full draw?
Whether I'm shooting barebow or sights, I go through the same mental process. I visualize the sight picture I want as I begin the draw. If I'm shooting sights, I pick my pin as I visualize the sight picture. When I hit anchor, there's only one thing left to think about. All I'm seeing or thinking about is the exact point I'm aiming at.
At least, that's how it goes when I'm shooting good.