I just received a #9 rubber plug, and a cover for my skimmer.#A7947 - Skimmer Plug for Above Ground Pools " in the swim"
The skimmer cover has a plastic face with a foam back cut slightly smaller than the front side, it will press into the skimmer and hold by compression fit.
Also, if you get that same type cover, look on the back foam side of it, there will be a round plug you remove that fits into the small vacuum port of the skimmer.
This will be my first time doing this also.temps back to mid 70's this week end, so next week?