When stringing a hybrid with poly in the mains the benefit's are clear . You will gain more spin from the stiffer string and lack of movement . How am I doing so far ? You soften up the string bed ,add more power and feel with a soft Multi or Gut in the crosses , so why Multi in the mains and Poly crosses ? Are most player's using this set up just using Gut in the mains ? Please coment if you have tried Hybrids both ways . Thanks for your feedback .