This sounds very familiar,
There are some pics of Bart Klapinski in MAN's Round & Round by Bill Netzeband that show Bart in some very unusual poses.
Jerry McMillin's AMA 68 was always doing a slow dance at the beginning of the flight and would fly a nice 55 foot wingover on 70's, no exaggeration! The arc in the lines would be very evident, and it would come to line tension at the other side of the circle depending on either dad's running back or possibly it would happen itself. Many times the model's huge fin would be only inches off of the ground when flying the inverted portion of the wingover.
This thread brings back nice old memories of those days when we seemed to have a quaint idea about how models flew, that we haven't seen in a long time. Models seem so much better trimmed these days! Must be all of the good communication we have about the event that has been disseminated through the years by Stunt News, magazine columns and the internet. It makes flying now a bunch more fun, I think.
Chris...