Getting even further off-topic, imagine a twin-float machine with X-shaped tail surfaces attached to the floats at the bottom ends and twin booms at the top ones, and a pusher engine at the back of a fuseage pod.
(Third family) This is not (completely) off topic... W-38C, YW-38C, XW-38C (the W-38C being a gunship or tourist aircraft)
Now those are very nice, particularly the middle one. Thank you. :)
They could probably do without the small vertical tails, since the X-surfaces would function as both elevators and rudders in the manner of the V-tail seen on the Magister and Bonanza.
Thinknig about it some more, the X-surfaces would probably need a small bullet fairing where they cross to clean up the airflow and avoid turbulence, as was discovered with the Whirlwind, Sea Hawk etc...