Quote from Mike805:
Also, note that placing stops at those levels assumes one has found the trend reversal point which, timing-wise, is a statistically unlikely thing to be able to call with any measure of reliability.
If accuracy is a concern you are better off staying away from picking tops and bottoms.
There are ways to improve such accuracy but still it's a fairly low accuracy trade. On the other hand the reward is extremely attractive and well that makes up for the low accuracy.
In the end, it's all about positive expectancy and trading what you feel comfortable with.
Anek