Some areas of the country do throw the weight in youth competitions. If you or one of your athletes is scheduled to throw in a youth meet, you will need to contact the meet director and check what size weight they will be using for the age group.
In the sense of performing as designed, most radar detectors do detect the presence of police radar in the immediate vicinity of a speeding vehicle. Whether or not that information will actually prevent a driver from receiving a speeding ticket remains to be seen, however.
Using the laser detection device and the RF Sweeper audio detection device will betray the presence of electronic surveillance in your home. Stand just inside the doorway of the room or at the entrance of the area of your home that you want to search for a hidden surveillance camera. Turn on the laser-detection device.