There is an impressive flight (figure-of-eight) with a human-powered aircraft shown here:
Given the long wings of the Aerocycle 3, can it be considered to fly in ground effect for the whole flight?
Nothing wrong with that - the Ecranoplans are fascinating creations - but how much more power will be needed to lift it out of the ground effect, should it be desired?
Also, this thing is just screaming to be fitted with an e-bike powertrain...