U19 anyone?

Managed to get out and do the line on a U19 game this weekend. These kids are fast & whine a lot. They want to have you whistle every infraction for their opponents, but want you to 'let them play' when it comes to their actions. There was the usual amount of pushing and pulling, the CR handed out simultaneous red cards,mbut got the restart wrong. Now, it could be logical to want to restart with a dropped ball,but one foul preceded the misconduct (because after the foul play stopped, making the following action misconduct) so the restart shoud be a DFK for the other team. We had a spectacular save on my end, which resulted in a deflection. The defense fouled the kicker which resulted in a PK - but I wonder if we should have cautioned the defender for USB. I am going to rethink this each time a foul occurs in the penalty area...