If you go to cold cop, give dude your money and sit parked in your car in a shit neighborhood cos he's out and has to go reup (I could tell he'd come back - I've been doing this a long time)... and as you're waiting, the narcs roll up, park next to you so you cant get out, hop out and proceed to jack some people standing on the sidewalk, ignoring you. You calmly keep watching a cat vid on your iphone, the narcs roll off, and your guy comes back and hands you your dope, and you pull off... with a smirk on your face.
Allthough it makes it harder to cold cop, sometimes it pays to drive a decent vehicle and look like you take showers daily