Piggyback

[Sirglider]

Hi everybody!

I'm a middle experienced glider and tow plane pilot. The thing is to teach my brother, my nephew and friends on flying the glider is tough flying at the same time. So one of my idea would be to carry the glider on the back of my plane. It seems easier as there is no issue during the "tow".
Does anyone could point me to any plan or CAD file from a piggyback structure?

Thank you for your support
Regards

[lenb]

years ago Hobby Lobby had a cradle for the top of a QB 60 airplane they had. Its really just a plywood standoff mounted in the middle of the wing.