I have never had it proved to me that casting is more productive in the fall. All of our biggest Muskies have been taken trolling in the fall. Trolling tactics depend on the lake you fishing. Contour trolling along weed edges works great in lakes like Thornapple. Planer boards work great on Lake st. Clair. Deep divers in deep clear lakes with deep forage. long lining on the St. Lawrence. Its all good. My favorite fall lures are my own 12 inch Deepthreats and my new 9.5 inch Magnum Claw. The Nils Master Invincible (10 inch model) is outstanding as is the 13 inch Grandma lure. I have caught 30 pound muskies on all of them. Lokes and Slashers also work well in the fall but require higher speeds. 3.5 to 4.5 mph seems to be the ticket for inland fall muskies sometimes a little slower but rarely faster. My new Magnum Rippin Shad is doing real well in Wisconsin on some real big fish. I dont know why it wont do real well here as well. Anyway dont waste a lot of time out over open water unless you are marking lots of bait. Muskies are for the most part edge relating edges of weeds, edges of deep water, points etc. I love trolling weed edges in the fall. I got several of my biggest fish doing that. Hope this helps, Kingfisher