Mike, what you have said about past history being brought up in court is 100% total BS. The officer's history is totally inadmissable in court, as is any prior offences of the accused. I might add that once it goes to court, it turns criminal, therefore any charges MUST be proven BEYOND REASONABLE DOUBT, so the officers argument of "Oh, I'm pretty sure old mate's fishing line was in the green zone" will be thrown out faster than a fat kid eats cake, put simply he can't prove it was definately in the green zone. However, those that aren't clued up will still be fined in hopes that they will be too ignorant to realise they've just been duped.
As for recording video/conversations by authorities,,,,,,also not admissable to prosecute, as Pinhead said. These recordings are only taken and can only be used in the defence of the officer if they are accused of abuse and or assault.