ive only seen one VTOL design that used the coanda effect to achieve lift.
it was a design i first concieved when i was 10.
i gave up after finding it had already been done.
(hint, stick a sheet of paper in front of an air duct, just under the airflow)
i cant find much info on it.
unfortunately, people want to stick with the standard designs of using sheer thrust and engine power to achieve lift.
helicopters would look strange if they had no rotors at all.
a flying bicycle is just silly. especially if it need seperate motors! but there has been one succesful human powered aircraft
required an olympic athlete and was very very flimsy. but was possible
can you imagine trying to get FAA approval? like i said somewhere once, if the FAA had been around kitty hawk early last century, we wouldnt be flying at all! people had BALLS back then. chutzpa!