I made two what I think of as "x-ray" calls last weekend, where I called a holding foul in one case and a corner kick in another case, based on incomplete visual information. Based upon the players' reactions, I now suspect that they were both bad calls. They were both against the same team, and caused me to get a fair amount of dissent. I chose to ignore the dissent only because there was only a minute of so left in the game, and I had to admit that it was to some extent justified. In both cases, I saw what seemed to be the effects of the action that I surmised took place, but was on the wrong side of the player to see what they actually did. In the CK decision, the ball bounced in the immediate proximity of the GK, who was facing the goalline with me directly behind him. It looked like the ball's trajectery changed slightly as the ball bounced up in front of him and then went out, so I assumed that it touched him. The second call was about a minute earlier, where I saw a defender's arm reaching behind an attacking player, and thought that the attacker was being held, based on what looked to be an impairment in his movement. Not only was there the usual denial, but the other team seemed a bit surprised to get the call, which made me wonder if I was wrong. This was a U-15 boys game, which I was doing solo, so I had no AR to turn to. This level of game is still at the upper end of my comfort zone, and I am looking for a little advice. Generally, is it wiser not to make a call when you suspect something but are not in position to actually see the foul, because there is a human torso between you and the action in question? Second, when you suspect that you have made a bad call, what is the best way to extricate yourself from the hole you have just dug for yourself? Finally, any suggestions for defusing possibly justified dissent from teenage boys when you have screwed up? I usually have no problem with girls, but I have teenage daughters, and can at least pretend to understand them.