have tp.-->meditate,-->jump ---> ws. normally self sc on samurai requires luck and for all hits to connect and to time your attacks properly during the course of an SC to work but jump from /drg gives you the tp just a little bit faster making the self sc not so luck based.
My samurai when I was on it usually got 80% tp (tp goes up in increments of 20% with meditate right?) then activated meditate. Upon hitting 100% immediately Ws. after that If it was timed right and with luck I will get the other 80% tp and swing twice while the tp is charging. If I manage to sneak in the two regular attacks fast enough I can press my ws macro right against fast enough again for a skillchain. /drg let's you use jump and means you only need to do one regular swing making a self SC much easier. I can't use meditate after the WS because the delay from activating the JA slows the swings down slightly too fast to get that extra WS off in time in my limited experience.