i would have someone carry a picket sign with just the exact title of their convention on it. since we arent allowed to read apostate propoganda, and since we equate picket signs with apostates, it would be rare to see anyone even reading the sign!, most having their heads turned in disgust and/or fear.
i guess my main hope would be that some red-neck with implosive rage symptoms would be so filled with anger at the sight of an "apostate" that he would lay a beating on my friend with the bag over his head and the title of the district assembly on his sign, before he even read what was on the sign. i would be in a bush or some ash and sack-cloth taking high-definition pictures of the event, securing the disfellowshiping of this "St. Peter" of brothers, for the de-facing of jehovahs witnesses own propaganda.
just kidding