There's a variety of solutions for ?-6. A fast team in the centercamp and the rest in the top camp to maximize the chance at hitting the north pestnode worked for me, but for some people, moving a team from top to either center or bottom worked better. It's a bit of a matter of figuring out whether all your teams could theoretically reach all pests before the first one hits the flagpole or not, and once you have that sorted, just keep trying..