From my experience and from what I've seen and read, the buzzbait will still produce fish down to 50 degree water. Below 50 you're better off throwing a spinnerbait, crankbait, jerkbait, or A-Rig. I caught a nice one last Fall in 53 degree water on the buzzbait but at those temps they just kind of suck it under as opposed to slamming it. I know Sykora won a tournament a week or two after I caught that fish and the majority of his fish came on a buzzbait. Just have to cover a lot of water and find those big black rocks. As long as the big 6-8 inch gizzard shad are on the rocks, they should bite a buzzbait. Upper 50's and low 60's is what I consider the prime buzzbait range. I fished the first two weekends of November this year and only caught a couple dinks on it. Water temps were in the low 60's. I just couldn't find a good buzzbait bite this fall... But I'll give it another go this upcoming weekend. I'm kinda hard headed and guilty of trying to make them bite a lure that I want them to bite