Deltas, or deltas with canards are high angle of attack aircraft.
To me this MIGHT mean lots of power to build up speed to rotate the nose cleanly.

USN had a full Delta jet seaplane. SEA DART ??? ALL engine and wing.


AVRO of England built a terrific jet seaplane. Can not remember the wing shape.

All seaplanes need lots more power because of the wet STICKY water AND the choppy waves to smash thru. Both EAT horsepower like crazy till the plane breaks free.