The following links and videos represent several years
      of various drills and ideas dealing with creating and
       maintaining a more responsive dog. They are often
                                   similar in nature.  

          One of the foundation writings on this topic is a   
      Retriever Training Forum thread written by Ted Shih.

                          Sit means sit....or Does it? (link)

                                               (links)

                                     The Awakening

                            A Session of the Hide Steady
                          The Hide Steady & Chain Gang
                                     Do Not Move Drill
                               The Kwick Long Wait Drill                                
                                The Hunt Test Wise Dog

                                         Training Tips