Hi Soultrader
yeah, basically they're my initial support/resistance guides - with the NY close being the fulcrum. They work & react best when price is cosseted inside a range zone.
Their effectiveness is diluted a tad when price breaks out & prints consecutive "Big Day's" - which it often does on the majors when they go on a run. But then, each trading behavioural shift has to be traded with very differing tools anyhow! Soon as you get a heads up as to which phase we're entering, it's merely a case of swapping toolboxes
Fib ratio's are a common them for sure, & on that score I really like the 78.6% number!!
If you like your Fib barriers, keep an eye on that calc.....it's led to 2x2c pay-day's on Cable with relative ease the past six weeks (on the 60 & 240m frames).
the 78.6 can be even be played on the 5m (not usually a timeframe I'd use ANY speficic technical observations on) pretty consistantly.
I hasten to point out: these tools & their observations are taken from the FX instruments, how they pan out on other instrument classes is unbeknown to me as I rarely trade outside this arena.