What the hell, here is another personal story.
On the high school golf team, I always found (as a sophmore) that the junior and seniors on my team shot in the 30's when playing together, but when I was paired with them, they never broke 40, which I suspected was because they were lax with the rules when playing among their friends.
I also suspected that such cheating kept me out of the top 5.....so one day, in an actual tournament that I qualified for, I was paired with a guy I was competing with for the last spot on many occaisions.
Early in the round, a player from the other school inadvertantly teed on up a foot in front of the markers, and I gently suggested he move it back, which he graciously did. A few holes later, my teammate left a putt on the lip and whacked the ball across the street, OB. While the other team was willing to concede his lip hanger and forget it, I told him I wouldn't!
I didn't even know for sure if the stroke and distance penalty applied, but suspected it did, and told him thats how we were scoring it until we got into ask the coaches. Both competitor and coach were dumfounded that I would call my own guy, but help a competitor avoid a mistake, but I did want to be on the traveling squad!
Junior golf is tough for cheating as I have relayed before. They - and their parents - don't know the rules any more than Wie, so inadvertant stuff happens. I have related an AJGA tourney where I saw what I thought was an illegal drop for a lost ball, which I let go, and which eventually pushed my son to quallifier status.
And in another tournament at venerable Colonial, my son's first experience playing that course was ruined by a fellow competitor who ranted, threw clubs, and eventually tried to mark down false scores, with my son as his scorekeeper, which led to an ugly confrontation at the scorers tent. The sad part is, and I understand the rules officials point of view, this kid was cheating to keep his score under 90 for looks. So, his tone of voice and demeanor was to just end the embarassment quickly, whereas my son would have sure appreciated the support for following the rules.