Trendline Trader enhances the usefulness of trendlines in forex technical analysis, helping traders visualize current market trends and identify potential pullbacks at resistance and support levels. Traders can employ two main strategies with trendlines: breakout trading, where they enter trades upon price breaking the trendline, and reject trading, where they anticipate price reversal at the trendline. Automated tools and software can assist traders in executing trades based on these drawn trendlines, making forex trading more manageable for those with time constraints.