So I’m working on snow/ice on my gravel driveway and I noticed this that relates to fishing. Our temperature this week have been below freezing all day long but mostly sunny. So the gravel still heats up and is melting the frozen snow. Each day we are getting a fraction more daylight so imagine why the fish like rock in cold water. As long as the sun can reach the rock in the waterway it will heat up no matter the water temperature. The bigger the rock surface the more heat potential. Be intentional when fishing!