Door-to-door sales is dying, but I still believe it's one of the most effective ways to sell to local customers. Last summer, I sold solar panel installations by knocking on 50 doors a day, and my close rate was 12%, which beat our online ads by 8%. The personal touch—seeing someone's roof, answering questions face-to-face—builds trust you just can't get from a website. But most companies have shifted entirely to digital, so could we be leaving money on the table? Should we revive this old-school approach in your industry?