You don't have to join any trails. You can manually downvote just for plagiarism if you like. Most of us in SFR act as individuals. I mostly remove votes where they were bought from bots. Someone buying a dollar of votes or more on several posts per day is depriving us all of rewards. I don't want to chase people away unless they really are not interested in working with the greater community. Good posts add value to Steem and we need more of them for sure.