I'm not in favor of making a fetish of full spin and recovery. I worry that emphasis on holding the stick all the way back through a full turn builds the worst possible muscle memory.

Yes,it's worthwhile demonstrating at altitude, but the ground will most likely get in the way of a recovery from a spin out of a turn to base or final. That's where we lose friends. Shears and other nastinesses lurk at low level.

I put a higher priority on recognition of and immediate recovery from an incipient spin.