Today I was talking to my one police officer friend and he told me that he uses a card (from a deck of cards) when he is lasering people. He told me that he holds the trigger down while blocking the laser with a card and locks in on a car then removes the card to get a reading. He told me that this allows him to have more stability with his laser and minimizes the chances of his laser being detected. He also told me that he has a low powered radar gun by his side just in case he can not get a reading on a particular vehicle. He told me that this is the way he would handle my jammer.