I have about 700 trouble free hours flying amphibians. A few systems problems over the years, but nothing which resulted in an unintended landing. My student had the wheels up, and properly confirmed, when a sudden, uncorrectable handling error resulted in an unhappy event.
I was told that we should have died for the force of the event, and my wife was told I might die for a day or so, but I still had things to do, so I came back. Wiser.
Even though I have taught water and ice water rescue for more than twenty years, and have taken an underwater egress course, I am now expert at finding one's self floating next to a sinking plane, having been ejected through the windshield. Avoid.