I probably missed the thread. Never sure where to post. Ancient Doughboy died and was replaced in August. First totally new all at once pool. Old one has been around over 40 years in one form or another. I assumed I’d winterize the skimmer as usual with Aqua door. Face plate on Summerville pool has sloped sides. Aquadoor has no where to grip on the sides. No seal. I have no clue what to use to close off skimmer. This skimmer also seems more fragile than my ancient one. I’ve been browsing internet, pool companies etc. Nothing stands out. I don’t want to drain below outlets. Help, please.