As is often the case, the answer is, it depends.
Imagine you had a system that you knew could win, under particular market conditions, 2 times every 5 trades. And imagine that you knew that on those two trades you had to win 2% (so you set a profit target), and on the three losing trades your initial stop would get you out at a 1% loss. Given enough trades...you would win, right?
In a system that uses trailing stops, if volatility increases and your stop can't adjust to that, which ratcheted stops can't (trailing stops that only move up), then it can happen that you are stopped out of your position, yet the trend continued. That sucks...but it's to be expected. You'll never a find a system/method which works for all conditions.
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