i agree, the sky above you is useless, but for example, have you flown around the coastal track at brisbane?
from the mainland to the first island, you cannot achieve a 'engine out gliding height" due to controlled airspace.
very unnerving spending 20 mins listening to every note of the old 2-stroke.
as opposed to crossing shark bay in WA, where i crossed the coast at 3000 and continued to climb to the midpoint before cruising down the rest of the way.
my original thoughts were to bale out when you got the trike near the water & down to about 40knts/stall but this would still mean your body hitting water at 75kph. not good.
so undo headset, keep helmet and seatbelt on, visor down and pray.
as for preparation, get round to a neighbours pool, get your boots, flying suit, headset and helmet on.
jump in the pool and have him throw a hills hoist & a huge tarp over you.
repeat until there is no panic.
one idea was to insert inflatable beds in each side of the wing so the trike might float, any test pilots out there?