i'm sure thats happened to the best of hunters. doesn't sound like you did anything wrong at all. so don't be hard on yourself or have any regrets or keep pondering "i should have..." i know you won't ever forget this and it s**** being caught off guard. one day you'll look back and laugh about it. just be happpy that you got to see it and know that it's there in the area your hunting. i'm sure you'll get another look/chance at him-knowing is half the battle!!! goodluck