As I keep saying - one needs to balance the need for an escape route from (the miniscule possibility of, assuming a properly maintained and operated plane) an engine failure over water, against the desire to make flying enjoyable, perhaps with passengers, getting away from the 50 mile burger run and going abroad, and it isn't going to be a very "welcoming" (not to mention practical) outing if one has to dress up like an astronaut.
One can do a lot of simple things which - looking at GA stats - will achieve far more than dressing up for a ditching. One of them is to make sure there is some fuel in the tanks (and one does this by taking off the filler cap and looking in there)..................