I'll 100% agree . With all this new screening software from cell co's and almost all refusing to answer unknown calls its going to either be door knocking or incoming tv leads or direct transfers. I had my caller call 50 leads 8 times over 3 days . She got me 2 appts's .I door knock and i get in 90% of people who answer . But no doubt door knocking is grinding and tedious . Driving 800 miles some weeks .