Thanks for posting this webinar. I have followed the advice to close late and open early for the past several years with great results--I wait until my water temp stabilizes at/about 60F before closing. But this doesn't happen until almost the end of October, and I'm constantly digging large amounts of leaves (and pine needles) out of my pool. I have a mesh safety cover that is not a very fine mesh. Can I close somewhat earlier if I cover my mesh safety cover with some tarps (silver side up to reflect heat?) and put a hefty dose of algaecide in at closing? Has anyone done this successfully?