I've personally been in court when someone tried to agrue that the name was spelled wrong on the ticket, judge just ammended the ticket.
Also watched a lady try and argue that the cop could'nt be trusted because she was actually doing 15 over but he only wrote her for 5.....judge amended the ticket to 15 over and increased her fine, officer discression is a bitch.
However I've had a ticket dropped because the officer did'nt circle whether I was moving towards him or away from him when he was operating the SMD, different jurisdiction and almost all the tickets were dismissed that I saw.
If you supponae the officer in the hopes that he doesnt show up and then he does show up make sure you have some real questions to ask him, if you don't you look like a complete jackass to the court. And fyi most departments pay a min of 3 hours of OT to that officer to come in off the clock, so odds are your costing taxpayers money and should join the FSA :-)
T