Easy way out uhn ! The Bollinger band can be useful for swing trading, but not without still having to make some quick decisions in the case where the swings are not just swinging.

Also, with respect to the overbought and over sold conditions, a market can stay in both state for a very long time though, so I hope you always take that into consideration as well. Nevertheless, I make use of divergence and some little bit of trend analysis and that has always helped me in making swing decisions.