Uh, I don't think there's such a thing as team-tactics in cat-5 or cat-4. You just single out the strongest guys regardless of team and stick to their wheels. They'll lead you out for the win at the finish.
Our team is pretty strong and we use tactics in every race. Last week I never took a pull and always had a team mate to pull me to bridge a gap. We sent two guys up the road and made the other riders work to bring them back. If you are smart and have a strong team you can have team tactics at any level.