Not be a negative nelly but i HATE, HATE Those pools lol they are snap lock types, i tried some for my kids eons ago.. they never ever stayed up and could collapse so easily.
That is clever, i have that size for my calls, they just fly into it. Now my only worry is the ramp, most ducks dislike them. depends, i have a lot of scovies and they climb walls(almost lol) so easily get in/out of things some other breeds don't.
Here my big pool... again i also have...
Looks from your avatar that is the teeny pools, get a bigger one lol
I have a big kiddy pools, and troughs but those can be tricky to get in/out of... i also have the bottom of an old kids sandbox but it's shallow ..