Maui, sounds like you got one that is a little hard-nosed, based on what you saying. What's with that guy that owns the bike? Owner not coming back? Is that bike a drug trade-in, or what? A little fishy there.
Laws vary slightly from state to state. Insurance laws are good and valid, but I find it strange that you got cited if you don't own the bike. In some states, it's the owner that gets in trouble for allowing someone to operate his vehicle without proper insurance, not you. An insurance conviction may affect your rates, but other equipment violations will not.
That cite for the tag not being visible is a little "green". A warning would have been fine. Was the tag at the end of the fender, or mounted underneath the fenderwell, in front to the back tire? In my state, the law requires that in addition to being a valid plate, it must be visible in normal conditions from 100 feet back, and be displayed horizontally (no kidding), have no tinted or clear covers to further obstruct view, etc. Any decent cop would not try to convict by getting a picture while standing over the seat. A valid photo should be taken from a height near where someone would sit in a car's driver's seat, behind the bike.
It's great that you were respectful, but that is to be EXPECTED; to be ethical, cites should be based on the violation, not attitude; good cops know this.
Yes, some people do perceive motorcyclists unfairly. That's why we should do all we can to work on our public image, which bolsters our legal position regarding Rider Rights, and protects us from unfair legislation, insurance regulations, etc.
Redelk is right. The judge isn't going anywhere off the bench. Take photos into court. BUT: most D.A.s will drop the lesser charges, for a plea on the serious charges, so don't sweat the tag cite. The insurance cites could pose the most serious threat to your rates perhaps.
Mr9R: Don't buy into the tales of beating radar. Radar is used to corroborate the operator's judgment. The officer interprets the readings, and is trained to know the difference. (Too complicated to address here). Radar is recognized itself as a sound science (Doppler radar), so the only issues that ever will come up in court will be with the operator (what he saw, certifications, etc.) Decent departments ensure that officers show up in court; not showing is unprofessional, unfair to citizens, and good judges don't like it, so in the future, in most places, this isn't going to be a good gamble to getting out of a cite.
Cisco: Covering for each other? I would hope not. If so, shame. Legitimate cops abide by principles, and wouldn't stand for nonsense, but it does happen. And guess what, decent cops would rather get rid of the trash quicker that citizens. WE have to work with the trouble makers, who make our job harder by feeding negative public image.
Maui: I have some problem with your story, though. If you were parked in front of a shop, and this meter-maid came by, why all the charges for insurance? A cop has to see you moving to cite a "moving" violation. Just parked, you might at the most get a parking ticket. Did he see you riding before you parked? This isn't a fish story for our entertainment, is it? If not, don't mind helping out....