Don’t be silly. You don’t need to drain the pool, if you use zip-loc baggie. :)
Funny, but neither of you apparently bothered to read the article:
"Apple's CEO, Tim Cook previously said that he showers wearing his Apple Watch and Apple said the Sport edition has an IPX7 water-resistance rating, which means it can be submerged up to 3ft (1 metre) underwater for 30 minutes.And a team at FoneFox in Australia has shown that the watch cannot only withstand a long, soapy shower, as well as being submerged in a bucket of water for five minutes, but can also be left in a swimming pool for around 15 minutes, 9to5Mac reported.
While the screen couldn't be used while in the pool, because of the capacitive screen technology, when it was fished out afterwards it functioned as normal.
The team found that the Crown still worked underwater, allowing them to zoom in and out of apps.