In the level II active exercises you rout the universal energy from your middle dan tien (heart) through your sword fingers and thunder palms. This is something I personally like since I have a stronger feeling when working with the middle dan tien than the lower dan tien.
Now as a qualifier on that I suspect that I often don't get my lower dan tien position quite right. On several occaisions, starting with longer meditations, I have found myself visualizing energy deeper behind my navel. At these times I have had very powerful feelings. Now I'm not sure if it's just my positioning or something to do with the level III meditations.
Back to topic. I like to use Master Lin's phrasing for using sword fingers and thunder palms. Somthing like "I send energy from my heart through my sword fingers to break up the energy blockage" or "I ask the universal energy to travel from my heart center through my thunder palms and enter this water so that it will heal my XXX". I like this verbal combination with the visual, because I allows me to acknowledge that I am just the conduit. Because it make me consciously focus my desires for healing and create a message with the image of energy moving.
You are perfection.
Iam2 
