I used to ignore trendlines, thinking they were too subjective. But one trade last month changed my mind. I drew a descending trendline on a mid-cap altcoin that had rejected it three times. On the fourth touch, volume started increasing, and the price broke through with a strong green candle. I waited for the retest — and when it bounced perfectly off the trendline, I entered. That trade was smooth. It ran up 25% in two days. Trendlines, when respected and tested multiple times, often act as strong zones of breakout. Now I use them regularly, especially in confluence with horizontal support and resistance. The key is not drawing them from imagination but from precise points of contact. Clean charts give clean results.