Your right ,it is hard ,but not impossible. Anybody playing can tell if they are doing well or not without looking at the scorecard. The guy just hit his best round,in the past he said he would let his head get in the way on his next round"over analyzing everything", probably thinking about his score before stepping on the first tee. So i say don't look at scorecard, he will know if he is playing well or not , don't have to keep going over to scorecard counting strokes putting unneeded pressure on himself, just play,relax and have fun. When I hit my best round I to could not stop thinking about it, thought about it the night before my next round, the day of my next round, during my next round,well my next round was one of my worst rounds because I was worried about my score,going back to the scorecard counting strokes. I'd have been happy just to have hit somwhere near my best. It's what I would try to do, hard but not impossible.