To get the best out of any analysis confluence between multiple tools is best because it gives a clear picture of where to possibly set take profit and set a stop loss in case of reversals. For me i Iove support and resistance and so I combine trend lines, moving average, time frame and indicative candle stick making sure my chart is as neat as possible and any signal outside this i avoid it. This keeps my trading discipline in check.
What are your own it can be beneficial to someone else.
With the different types of trading styles out there it's actually possible to trade without tools tbh, only naked charts. Btw I don't think drawing support and resistance can be considered to be a tool, but adding moving averages and the alike these can be considered to be as such as they are in the category of indicators but they aren't as reliable if you ask me.