I don't know if trend lines work, but I like using them. I am a fan of Edwards' and Magee's, TA of Stock Trends. In the book markets are described as being in a Primary Trend, Secondary Trend and Minor Trend. Since I am not confident in my predictive TA skills, I am trying to develop my reactionary TA skills and these subjective trendlines help me see "trends", "changes in the trend", "consolidations" and "reversals" in a reactive manner. I also like MAs Peter Brandt's trading plan uses TAST as its basis, but as been said here in this thread "position size" and "money management" is key. Especially if a trend following system may only be 30% to 40% correct.
%% Yes, trendlines work; but still plenty of other work involved...………………………………………………………………………………………….
I don't believe drawing straight diagonal lines make money, only an identifiable edge can make money. Risk / money management will help you survive. Trendlines are just "my" aid in determining if a market is trending or consolidating, it helps me make a decision. If I'm wrong, so what, my money management gets me out for a small loss
Trend lines are more about trend than lines. And most see the finger instead of the moon. And maybe that the best trend line, Is a broken trend line. Lmao