Didn't bollinger himself point out that to a good degree btc does seek to touch the lower band if it broke up through the upper one?
I see this repeating quite often in my charts if i enable BB.
Sure, if the breakout is a head fake. John pointed out "we need to see follow through or we'll be setup for real trouble, a Head Fake". I don't trade BBands short or medium term. My most successful trades are long term using 3 day RSI. The last buy signal was March 11 when we dropped to $3850. Next sell signal will be when 3 day RSI is over 90 to 92.