Dick Hanson designed the 'Tipo'. I think you can still get the plans.
The Magic was Prettner's ultimate pattern ship - at least in terms of complexity - flaps, airbrakes, variable pitch prop. He did a '180' after the Magic and designed the Calypso to move pattern in a less complex direction.
I wish he still competed []. Pattern seems to in an expensive direction, but the equipment sure is great.
Happy flying,
Will B.