45 degrees seemed about the right daytime temp to put the cover on for the winter, but we'd already had some sub-30 nights, and it was overdue. However, the mechanic had only just come by to winterize the engine, so now was the time. After carrying the canvas-support frame I've made from wood over to my neighbor's dock where the boat is on a lift, strung it up with line and then put the cover over top. Then the hard part started, which was getting the far side lines under the boat and attached to the dock side. This requifred me to take two kayak trips out and under the boat, using the boat hook and a paddle to push the line to the dock side where it could be retrieved, mercifully, by my buddy who volunteered to come out and help -- which saved me hours!