I'd agree, go to your state forum here and see if anyone in your county is open carrying. Arrange a coffee with him and OC together.
Also, if you have gun shows in your area, get acquainted with and chat up the state police guy who is manning the show. They usually stand in the background. If they are fire-arm and 2A friendly, ask for their card. See what their position is on OC-ing. If they are OK with it, or perhaps suggest something consider that.
IF STOPPED, you might say 'oh do you know Lieutenant XYZ, he and I talked at the gun show and we discussed the legality of open carry and he said you're fine as long as you don't go into a prohibited place
Consider printing out a cheat sheet of the laws for your state. Though you won't get a LEO to read them you can say 'According to state statute ABC', or according to preemption laws or something. Obviously if something is not prohibited and there's no laws about it (like OC, since it's a constitutional right) you won't have a law or anything. Best not to talk to the cops - you only risk arrest by falling into an incrimination trap or 'sassing them'.
Last, don't try to argue your case in the street. Carry a recorder and TURN IT ON when you leave the house (otherwise you'll forget). If you are stopped cuffed and stuffed do not resist. Get a lawyer and file and have your recorder as evidence. Be sure of the laws governing one and two party recording.
To me the safest, easiest way is to OC with a 'friend' in your area who has been doing it for a while.
Good luck!