Did my annual spin check in the Puchacz glider last weekend. The guy in the back wanted a spin to the right; so, told me to put on a few degrees of right bank and slowly bring the stick all the way back. It seems I cheated by keeping the yaw string straight as the Puch spun left.
Perhaps we should have tried a bit of left bank to get a right hand spin -- or a bit of skid.
Of course the classic spin turning final is a shallow banked turn from a tailwind on base "helped" by a bit of rudder. A well banked turn goes a long way to avoid that.