Bat Patterns can be traded many ways. These are the rules I follow:
1- First I find the impulse leg which is the X to A move in the pattern.
2 - Once the impulse leg has been identified I wait for retracement of the X to A move. I draw a FIB retracement from X to A and price must touch the 50% retracement but cannot touch the 61.8% retracement. This completes the A to B move in the pattern
3 - Next I wait for a retracement of the A to B move. I draw a FIB retracement from A to B and price must touch the 50% retracement but cannot violate the price at A. This completes the B to C move in the pattern.
4 - Once the first three legs have formed I am looking for price to touch the 88.6% retracement of the impulse leg (X to A). That completes the C to D leg of the move.
5- Limit order is placed at the 88.6% retracement of the X to A move.
6 - Stop order is placed at the 1.13% extension of the A to X move.
7 - Target is placed at the 38.2% retracement of the A to D move
8 - Set it and forget it!