So far I'm 2-0 in winning speeding tickets at trial .ie judge, court reporter, witness, ADA, verdict, me kicking butt. Both were in the same locality with the same judge. (Very bad luck.) But I prevailed. If the place you got nailed is close to you in driving distance and you have the stomach for it... fight it!!!
Definetly check the National Motorists Association (just google it). I've been a member for a few years, and they have a legal defense kit for people who want to fight their ticket. I used the kit in conjunction with my own research on traffic laws (NY).
Find out if any local college or university has access to Lexis Nexis Legal, if so search away, you may find some decent case law that could help... pacing... speedometer calibration, etc.
As I said that I fought the tickets in court, you defintely have to man up for that as a pro-se (representing yourself defendant). You definitely shouldn't spend money on lawyer, unless you are terrified of authority and can't string two sentences together in front of an audience.
Moving on, just so you know... in court... it doesn't matter what actually happened at the scene of the ticket... the only thing that matters is what you (or they) can prove in court. Also it means that you can't attack the testimony of the cop... you need to attack the credibilty of the witness (LEO).
This isn't hard... actually it's quite enjoyable, both my cops nearly lost their tempers with my line of questioning.
Speaking of questioning... there lots of resources of what questions to ask, (seek and ye shall find)... always good to go after their training, you know more about pacing then they do and whack them over the head with that knowledge, like calibration records, traffic survey, visual estimation. (In NY a cop can testify that he estimated your speed and that's enough to get you convicted, radar is optional.)
Also get as many continuances (re-schedules) for your trial date as possible, this screws around with the court's calendar and increases the chance that the LEO doesn't show where u then win by default. (Didn't help me, but I was ready nonetheless.)
Wear a decent fitted suit and don't rail about the injustice of LEOs going after otherwise law-abiding people... Remember you're there to argue about the law... this isn't congress where you get on your soapbox.
Another thing I learned is that courts hate people who fight their tickets, since they screw up their system. This works in your favor... if you are taking up a lot of court time with your... case as you should the judge will eventually do almost anything to get you out of there and stop wasting their time. .ie "persuading" the ADA to give you a very good plea bargain (my favorite, non-moving violation, no points... like low tread or blown tailight)...
Anyway good luck, hope that helped a little.