Thanks to @sifeij for pointing out my error.
Lots of momentum now and starting to form a trade-able trend. May publish another idea on this as things develop.
This does not mean what you meant though.
For upward breakouts, use the highest peak (A) in the chart pattern as the target. For downward breakouts, compute the difference between the highest peak (A) and the lowest valley B in the chart pattern to get the height. Multiply the height by the above "percentage meeting price target" and then subtract it from the lowest valley (B) to get a price target.
From this is drawn the price target.