I seem to recall it goes something like: Pitch into a steep climb with speed; as the airspeed decays to launch speed, pretend the wire broke, commence a pitch towards horizontal, but not to vigorous.. arrive flat at something significantly underneath regular stall speed, still flying 'cos you're at significantly <1g. Move the stick back to the regular 'level flight' position, commence a turn (no deliberate mis-coordination required)...
.. at which point the world flips and starts rotating
Puch was the first aircraft I spun that the rudder floated onto the stop and stayed there - i.e. required positive recovery rather than releasing the pro-spin controls.
Interestingly I'm currently doing powered aeros in a R2160! Not spun it yet tho..