Recently, however, I've come around to the idea that I can probably improve my kick while still "saving my legs" for the heavy stuff. In other words, it may just be possible to have one's cake and eat it too. I've started mixing in a little kicking to try to get more bang for my 2-beat buck.
I really like the videos from the Race Club, led by Gary Hall, Sr. I posted a couple of these in the past and they've been quite popular. This one talks about propulsion from kicking, something I am sorely lacking. Lots of great tips in here, although "thanks, but no thanks" at 2:43!