I miss the Blanik very much. I spent many happy hours in the back seat, instructing students and introducing them to wave-flying.
I much preferred flying from the back seat. Better stick-geometry and more room, although laterally, it was like wearing "blinkers".
I always found the front stick too tall and I use to encourage my students to hold the stick at or below the bottom of the hand grip, so that they could brace their forearms on their thighs, to prevent PIOs on take off.
In the 70s, I was in a club that had an IS-28B2 Lark. It was interesting to see, during some "owner maintenance" (ahem!), that the manufacturer, ICA Brasov, had copied the Blanik's control geometry exactly.