If I could be bothered I would build a tandem biplane with canard pitch control and vertical surfaces joining the wings.

I guess it would look like a boxkite.

But I can't be bothered. I have a list as long as my arm of scale models I want to finish/start so I wouldn't waste time and money proving a point to the narrow minded who say it can't be done.

Canard control would prevent the "fail safe" stalling the model.