Generally the officers notes seem complete, so beating it at trial will be near impossible unless you hire an expert witness to testify on your behalf.
However if you show up on your trial date and talk to prosecutor before trial starts, and they might offer you a plea deal and offer to drop no permit charge if you plead guilty to speeding. They have no obligation to offer you a deal, but they might. And you can also ask as well for a reduced speed if you plead guilty to speeding ticket. 29 over would be the next lower demerit point level you want to get to.
+++ This is not legal advice, only my opinion +++
I am a bit confused by this post, the officer wrote down the reduced speed on the ticket as well as disclosure (he said he caught me going 55km/h over, nowhere does it say this), does this mean my ticket will get thrown out if I point it out to the prosecutor?