a full up elevator doesn’t mean the plane has to climb until it stalls. There is more than one axis involved and the pilot can turn the plane so that the climb is now a banking maneuver. This can be alternated left/right in order to fly from point A to point B.
Landing is a lot trickier as it has to be a banking decent to a stall at ground level. Probably best done over water. This was actually done in a DC8 in MHR and the crew was successful until landing and then it went badly. It was at night and they missed the runway. Had they landed with sufficient flat space they may have succeeded.