One common misconception is that there is art to bribing the Malaysian Cops. Its the very same cops that take part in the sting operation. Its to give a semblence of order and good governance. These sting operations occur yearly when Mahathir first mooted it.
Its best to pay the fine.
I sometimes hear people telling how you look at the body language, use cryptic language, put the money in the book etc. When it is a sting, all that goes out of the window.