Last October for the first time in 18 years my pool liner located in the Chicago area floated at closing causing me numerous wrinkles at opening this spring. I had to drain and reset the shallow end of the liner to get out the wrinkles due to size and quantity. The issue is the my lounger has 2 jets 6" lower than normal returns. Due to the heavy rains and the amount of water i had to remove the liner floated. I played around with a sump pit but due to the high cost and and complexity I don't think it makes sense. However due to the amount of rain this year I am assuming this could happen again this fall. My only other option is to use a Duck Plug or Bungee Plug on those two jets when I close. I am planning on using the standard screw in plugs on the other returns. Any recommendation on which one is better? Any other brands out there? Or any other suggestions? Thanks