Dislikedtresorfx..........you might want to consider using ATR on a Daily chart as a starting point for your research. The current ATR (20) for GBP/JPY is 250. If you use 90 pips as a benchmark for the size of your breakout box on that pair, that amount is approximately 40% of the ATR (which incidentally equals the ATR on a four hour chart). A similar .4 x ATR (20) on other pairs (or ATR on the 4 hour chart) would probably be useful for initially deciding the size of your B/O box. I have been doing something similar to this when using this strategy because I am of the opinion that a smaller B/O box lends greater weight to a successful B/O trade. HTH!Ignored
As for the height of the box, i dont choose 90pips only by the histirical data, i practiced it and since, i didnot make any losses trade.
certainly,i'm sure ATR will be be some thing very interresting. so i expect you for that
good trade to all.