text:  After a short break, I plunge back in. This time, it feels much more real. As soon as I take on that weight, I immediately struggle to keep my head above water. Fortunately, since this pool is shallow and I'm not fighting a rip current, I don't need to hold him up very long. And for good measure, we asked two volunteer dads to give both scenarios a try. Like me, Ryan successfully rescues both the brick and the drowning victim. But also like me, it was a lot harder than he thought.