So water temp is hovering in the mid 60s so too soon to close. Lots of low 40s, some 30s overnight for the rest of this week and not likely to warm up soon. Here's the wrinkle... I have been allowing evaporation to take its course over the last few weeks to lessen the amount I need to drain at close. Today during the last pump cycle of the day, the water is now at the point where the skimmers are sucking some air. Waterfalls into the skimmer baskets rather than a whirlpool. So... for the next several days, I'll have both the skimmer lines closed, only drawing water from the main drain. I think I'll be OK as long as I do some brushing and run the robot a few times for circulation and cleaning. No skimming action so I'll have to hope the leaf intrusion is minimal and run the leaf net daily as well.
I'd rather do it this way instead of adding a couple thousand gallons to bring the water level up for a few days, just to drain it all out again.