When looking for harmonic patterns, its better when we find and trade perfect ones (Its our money and should take care of it) They are rare but offer the HIGHEST probability trades, its almost ATM CASH! For example, this perfect bat ocurred on EURGBP-M1 chart (i remember i traded this one live)
There are six requirements for a perfect bat. You can see on chart. I see most traders look only for 2 or 3 of them. Trading this way they have a low probability trade.