I always let them pass. I like to be the second fastest person on the road. I let them get about a 1/8mi infront of me so the cop has time to pull out and stop them before I pass him. If the pass and slow down again. I will put some distance between us.
If somebody is following too close I ahve some tricks. the best trick I know of if somebody is tailgaiting and you can't shake them is: keep a case of oil behind your seat. pull a quart out; remove cap and toss it straight up. It will hit their windshield. It takes 10 minutes to clean up if you have the stuff to clean it. I know a guy that did that with a big bottle of brake fluid cause he couldn't find a quart of oil. I guess they can buy some new paint.
If somebody is tail gaiting me and won't pass or back off after I flash brake lights. I slowly run the speed up to about 90 and lock my brakes up just for an instant. I have yet to meet anybody that wants to tango after that. If they are bright lighting you blight light them back with a 1 million candle power spot light. My brother dd this to a semi that wanted to mess with him. He jack knifed it on I40.