I am sure Bob knows more than me but anytime Dale is below 55 degrees, I have to try it. Love it in December when the temp hits 50 for the first time but I start throwing it at 55. We were down 3 weeks ago for 4 days and it was supposed to be "Over" then by all accounts but a 5-4, 4-6, 4-2 and several more over 3 plus a 5 even Greenfish all came on the fly and the temps were 52. We will have to get together down there in mid December on a Tuesday during a Sleet storm with air temps right around 34 and water temps at 50, not see the sun all day long, wind blowing about 10mph out of the North and we will watch the bobber go hippity hop. The absolute best days to fish at Dale in the winter as described above. The days when you are launching, kicking yourself for leaving the cabin, wondering what in the hell is a college educated guy doing in weather like this chasing the mose elusive State Record fish swimming in Kentucky waters, then the 5 plus pounders on honey hole number 1 come aboard in about 10 cast make it all worth while and you start stripping layers for it just got a bit warmer.