But it is full of water; and thus it could not be hoisted (snatched) from the water by any device. Instead it must be s-l-o-w-l-y raised inch/cm-by-inch/cm, or as rapidly as the hoist can handle the weight, to allow the water to drain from the aircraft.
Agreed.
There is also the consideration that all of that weight is going to be concentrated on several relatvely small points where the lifting devices are set. Chances are that the structural strength of the aircraft is not sufficient to withstand that, unless the water is allowed to drain out as it is lifted.
(Me=not a pilot at all, but sometimes a professional crane operator.)