I'd never denigrate door knocking. It's tough work. I did it briefly in the early 80s for SANE/Freeze, going door to door in Long Island neighborhoods with a DSAer (and Harrington disciple) at my side. It was brutal. For every signature or promise of money we got, there were at least 10 angry fuckers who called us Soviet stooges, chased us off their property, or slammed the door in our faces. One rightwinger I remember was calmer. He told us that we were playing the Soviet game, and that if we really loved America, we'd work for Jack Kemp. He then gave us some articles by Kemp, mostly economics, but some national security stuff, and I recall admiring how he canvassed us without leaving his home.
DP