Low Rider,
I saw Hanno at the '83 Worlds as well.
He didn't have a variable prop.
He did want to show the pattern world that you didn't have to have a complex plane to win.
The empennage was all flat plate and it was a simple design.
However, for braking in the down lines he had an intermediate landing gear position.
They would be kinda half in, half out.
He had gear doors oriented 90 degrees from normal so that they in effect acted as air brakes.
The best individual flight I saw that year though was by Ivan Christiansen (sp?).
It was as near perfect as I have ever seen.
Simply beautiful...
JLK