I just moved to a new home with my first pool. We installed all new equipment, ran new lines, painted epoxy (replaster for my size was too pricey atm), and ordered a new mesh loop-loc safety cover (solids for my size aren't too practical I hear). After getting proper chemistry levels I haven't had to do much other than figure out the sweet spot on the chlorine feeder. Water has been clean all summer. Now with closing coming up I'm thinking I'll close late and open early (based on 60deg temp). I'm reading that the preferred method to winterize here is to shock and then PolyQuat. I'm guessing that those that don't add algaecide, or run the pump, and open clean have solid covers. Being that I'll have a mesh cover (and quite a few trees around), I'm kind of expecting green water during opening. I wonder, is it worth trying to prevent anything now vs just taking care of it during opening? Is it much more economical to try to prevent vs fix? Do I even have a chance against opening green? Should I try my first season shocking only and see how it goes before trying preventative care?