It has been warm enough on a few days to swim, so we put out our stock tank pool. We have too many trees to have a regular pool, and the area that is free is quite unlevel for an above ground pool. This rigid 300 gallon Rubbermaid stock tank can take the water pressure from the uneven rough ground. This is our second year with this pool. It was stored outside during the winter with no ill effects. The drain is a big plastic screw bolt which is replaceable if broken or lost.
In the summer, I put up an inexpensive netted lawn tent around the pool to keep the mosquitoes at bay.