PBA Cards

So i was reading someone Else's blog (Phil) about getting pulled over by a cop for speeding. He of course had "his ace in the deck", AKA a PBA card.

I've always heard of people using a PBA to help them get out of a ticket, and such...

But My question is this:

How do you present it to the cop that has pulled you over?

Do you just hand it to him/her with you License and Registration?

Do you "nonchalantly" let him see it and hope that he in fact does see it and ask you for it?

Just how does one go about using a PBA card?

I have had one in my wallet for the past 5 years, and have never known how to use it when the time comes... In fact, mine is a PCA card (Police Chief's Association) so that should be a bigger ace in the deck, right?