We land in such a ROUGH & FAST sinkrate that we are thru the ground effect before it is noticed.

Land a Jumbo jet the way most people land & there is no ground effect either.

No plane left also.

The pilots of the East River ditching knew ALL about ground effect & how to use it.

My opinion, not great, is that the Deltas are the true kings of ground effect. Why? Because they FORCE the fuselage to BECOME part of the wing area and go into higher AOA. Saab Drakens had tailwheels & tail skids in the 1950's because of the high AOA on their HIGHWAY AIR STRIP landings.