I remember one of the last times I fished Lake Henshaw in January when there was ice forming on the guides of our rods. The water was very cold. I found a nice looking drop off in 25' to 30' in the middle of the lake and using a yellow 3/8 oz single Colorado blade spinnerbait with a yellow Mann's Sting Ray grub (which has no action), on a slow retrieve to keep it on the bottom, I hooked and landed 3 big bass. I had to keep the bait right on the bottom and retrieved it just enough to keep the blade spinning. Bass will bite in the winter if you find them and slow your retrieve down.