Caught them the week between Christmas and New Years at Enid in 41 degree water at 1.1 mph. All I can figure is that water was so muddy that he higher speed spun the blade on SatDocs Sickle Jigs fast enough to cause a commotion and help the fish find the bait. My wife and I wore them out after we figured this out. Peculiar thing was that every fish but one came on Donnie's Gnats on the top hook. I've learned that I never will have this figured out completely and I always have to be open to trying off-the-wall ideas when the fish aren't cooperating.