esiotrot,
Yes, the text book BO is as you say, however,you need to stay ahead of the crowd and look for clues of the impending trade the market might offer. The immediate past trading range was clearly broken at the level I mentioned so you go long with a stop back in the trading range.
That means:
(a) your stop is much closer producing far less risk
(b) your profit potential is much greater - I'd rather be long at 570 than 700
(c) look at how momentum accelerated from the BO at 570 - why?- because others saw the BO and jumped on it.
(d) had the rise stopped at the 640 you mention, (or the 700 which is my view of the C&H BO), producing a double top, your approach would have given rise to at least a small loss, whereas mine would have already produced a handsome profit.
Only my views, of course, but that's the way I trade and everyone to their own methods ;-)