Seeking sales methods with high scores, online, etc.

There are many such things now. The best way is to find a master who knows how to sell, and then find some salesmen. He will lead them and spread the net everywhere. The best places are residential areas and material market. The professional knowledge of the salesperson is not important. What is important is an important link (getting money from customers). Only by mastering this link can you do a good job in this business.