Have to agree with NAV165 on the guided trip; I have fished the Willow twice a year since 2008 and went out on my first guided trip with Bruce Gruening 3 weeks ago. We learned so much that we are going to book a spring trip with him next year.
Dave at Walleye's Only is also an excellent choice. All you have to do is scroll down this thread to see the pictorial evidence that these guys know the body of water and will put you on fish.
Good Luck this weekend; the weather looks spectacular for this late in October.