Use the following trick to deliver a flurry 3 by hiding and get an "A" rank. 
From where you start the mission, veer left to the truck near the two men busy 
sawing the log. Wait until the man sawing on the far left hand side is as far 
away from you as possible. Press Y to climb in the truck. The hungry woman 
closest to you will faint, but stay in the truck. Behind you a woman come around 
the ramp. By the time she is near the truck she will be hungry. When the screen 
indicates, press A for 20,000 points and an "A" rank.