Great advice, but easier said than done IMO. I think I blow more shots by taking my eye off the OB than any other way. Somehow, in the move to get into my stance behind the shot line, I take my eye off the ball for an instant and lose the connection between the two balls. I'm getting better at it since it was pointed out to me during a lesson with Fran Crimi, but it's still hard for me to focus on that spot the entire time I'm moving into shooting position.
