Mike, I agree there are bad cops and good cops, Young ones or recently released recruits are trying to find an even ground but it takes awhile, unfortunately only experience will lead the way. Most LEO's are thick skinned to a point. They just want respect as do you. For those, red-neck, AH's, ( not only LE but civi's as well), there is little hope. In that case, the yes sir, no sir contact is in order. Later in court, you can plead your case. Chances are that the Judge won't have the proper info so, you need to bring everything with you and be sincere..If you lose, you lose. You can research it farther, get a affidavit from the State Commercial Vehicle inspector, etc..A debate on the side of the road isn't the same as questions asked per the violation..You can gauge it at the time. Guess I've been pretty lucky. The times I've been stopped, I was in the wrong (speed and equipment violations), and had pleasant contacts..of course, I still had to pay the ticket..
If you have a problem with the LEO's demeanor, take it up w/ the Department..File a complaint..make sure you know what you are talking about however..
just my 2 centavos..
Mike