>>24029711
Basically, yeah. But the importance of it is that a bull flag shouldn't go below the first dip by a significant amount. If it does, it means that it isn't a bull flag, but a double top.
Example: the stock is bullish; it peaks at 10, goes back down to 8, peaks at 10 again; if it goes back down to 7, it means it's going to go bearish for sometime, if it stalls at 8, chances are good it's going to go back up to 10+.
This won't help you sell at the peak, but it will help you know when to get out.