When the ground is sand or mud I find it ok to (very slowly) foil close to the shore, riding high, then jump off to the front, that is over the nose and land on my feet. This way you can even go until the foil touches the ground. Be out of the straps already and ride your wing Mary Poppins style. When the board disappears beneath you, you know the moment has come.
But honestly, I wonder if anyone would want to use any of the recommended techniques in stingray infested waters, whether they involve landing on your feet or your back.

This is one of only a few situations in which touching the foil seems to be comparatively insignificant to me.