Intex 15-Foot Round Easy Set Pool Cover

I have a 5-1/2 foot galvanized stock tank using as a "pool"...will the 8 foot cover work or be way too big?...looking for a cover to keep debris out.

Dose this fit a intex swim center family lounge pool

Anyone have sucess using this cover with the 12 foot metal frame pool?

Are these the right dimension for the 15ft pool cover? Size: 15-Foot Product Dimensions: 5.2 x 12 x 10.5 inches ? If so how well does it fit ?