Okay I've only read the first few posts, but aren't you missing a variable?
Dont you need an estimated probablilty of
a) you hitting your stop.
b) you achieving your objective.
if your Expected value (mathematical expectation over infinite runs) or a usable risk:reward ratio is to be calculated?
And to do this without arriving at stupid conclusions you'de have to be pretty experienced.
E.G. In the given example (in post #1), your risk:reward would only REALLY be 1:4 if you hit your stop ($4) as many times as you reach your objective ($9).
A more realistic risk:reward would be less than 1:4 imo, at least for traders like me who aren't experienced. For some, it might even be higher than this figure.