Having had a thoroughly enjoyable day last Saturday in mid-France, I was (and am) struck by the danger of trying to over-analyse things.
I fired 4 shots, got two boar (each with the first shot), and missed a roe.
For both boar I was very interested (after the event) by how I didn't even think about the rifle or sights: I just swung through, both eyes open, focusing on the boar as they ran. The rifle did the rest.
But I probably thought too much about leading the roe, and complicated it all.