If I were Ewald Gritsch, I'd be very happy to declare that TCT was "solo" in the Stearman when the R44 was shredded!
Having provided seaplane training a few days ago, and then recommending an endorsement for my student, I reminded myself that the Canadian words are "as the sole occupant of the aircraft". Thus, I got out on the beach to send my student solo for his required five solo five takeoff and landings.