i have had my finger caught in the system before, and let me tell you... the judge has heard it ALL so try not to lay on the B.S. too thick.
The goal here is to not have bad marks on your driving record. if that is not possible then i guess getting the fine lowered would be the name of the game.
If there is a class you can take i would recommend it. you need every advantage possible. i have had a criminal case (for bag of herb) dismissed because i got into a support group before the court date. take the class, challenge yourself to examine your actions, and use it to better yourself.
Pray that the cop doesnt show up... Bigmac has a pretty good game plan. in my experience, everytime it was a bs "stop and frisk... he aint got shit on him so lets issue a citation" ticket (I.E. no front license plate) they haven't showed up. however i like how blackls puts it... if you are going there thinking that the cop wont show up, more than likely they will.
If the cop has you dead to rights, dont try any lame excuses. youll only piss the judge off. where i live (oregon) they usually knock $100 off the fine for not wasting their time if you just go in and say "look, i fucked up and i will do my best to avoid this in the future"
above all... prepare for the worst and hope for the best.