Yes it is not easy to keep them mad at us as tanks, takes focus and thinking and balancing what is most important, i try to focus on the main boss and gather in as many of the others as possible at the same time which is not easy if they are running all over as some do. Some times we have to just work on the most important and trust the rest of the team to take care of thesmelves for a bit. Tank cant be everywhere but we do try.