I've always felt that blazing while driving is one of the most secure methods. I don't think people can see you hitting your bowl/j unless they are really looking for it, since you're driving by them at a good speed. And even if they do, if you're smoking a j, it just looks like you're smoking a cigarette. Just don't drive like a dumbass and police will have no reason to pull you over.
Yeah I always felt good rollin and bowlin too we have a perfect 2 mile road that make a circuit surrounded by farm land which was my smokin road.