I chuckled at the pictures, mostly because i can remember doing that so often. The first two years i was fly fishing i borrowed hip waders. I always wanted to get to that next spot and go out a little deeper to get to that fish that was just out of my reach. I was too bold more times than i can count my first two years and ended up dumping the water out of my hip waders doing that upside down crab position just like in your pics.
When i finally decided to purchase waders of my own, i made sure to get chest waders. Now i can go those extra few feet without worrying. If I wade too deep that I threaten to fill my chest waders, i'm not just being bold, i'm being stupid.