[quoteWe don't get to practice ditching][/quote]
Why not -assuming of course you are talking about practice ditching in the simulator
In fact it should be part of type rating training as every aircraft is different. The Boeing 737 FCTM and QRH give very good advice on the ditching procedure. But it takes good instrument flying skills especially if carried out in IMC/night. That is because any excess variation from the recommended airspeed and rate of descent will effect the body attitude. There is an optimum body attitude at impact and attitudes lower than that even momentarily could cause the aircraft to dive under at impact. Pilots proficient at raw data manual flying will quickly get the hang of the careful instrument scanning and thrust handling required to maintain a steady state rate of descent and nose attitude in the last few hundred feet. Remember there may not be accurate QNH available.
On the other hand simulator experience has revealed that pilots wedded to automatics and out of current manual instrument flying practice, usually "crash" several times into the water rather than maintain correct flying attitude, airspeed and optimum rate of descent. It is a worthwhile exercise in the simulator which doesn't take too much time.
If it is obvious this writer is somewhat biased in his thoughts on practicing ditching in the simulator, it is because in another life he spent a few thousand hours flying wartime designed four engine maritime reconnaissance aircraft over the oceans, night and day at low level.
We carried flame-floats, which when activated in contact with the water, would burn brightly for several minutes. On long range maritime reconnaissance flights, crews would take up pre-planned ditching positions in the aircraft while we practiced laying our own flare-path with flame-floats in the water and made approaches with go-arounds conducted at 200 feet. Squadron pilots were thus well versed in ditching techiques in terms of airspeed, rate of descent and nose attitude.
I must say I didn't envy the crew members sitting in their ditching stations as they couldn't see outside. No doubt each prayed fervently the pilots knew what they were doing because no one wanted to get wet feet 500 miles out to sea.