I actually just mowed three days ago, and while the nights have made pools too cold, it's certainly still warm enough during the day.
Yesterday was the coldest it's been mid-day since spring, and it took two days of rain and cold fronts to get there.
So give them a solution they've never thought of before. I'm sure your internet degree is sufficient to convince them.
Everyone likes to preach about how it's wrong to do the thing they're doing, but nobody EVER has an alternative that will actually work, or hasn't been tried before.
I don't have a solution, and THIS certainly isn't it, but then I'm not dragging a soapbox around with me.
Go give the IRA a better solution. Go give the American colonists a better solution against the redcoats. Give the poor of france a better solution during the French revolution.
I don't have a better way, but don't pretend like you do