However, seems you are right, it's more likely to breakout below.
Kirkpatrick II, C.D., & Dahlquist, J.R. (2010). Technical Analysis: The Complete Resource for Financial Market Technicians (2nd ed.). Upper Saddle River, NJ: FT Press.
I think nearly every wedge I've spotted has worked out, though not always as much as you'd hope. Sometimes you'd barely be up or down if you just held through it.
I think the lesson is to treat patterns as one piece of evidence, and discount them according to their reliability.
Thanks for sharing your observations of likely outcomes.
This seems like a useful video-lesson set:
I'm very skeptical that short trading is a good idea, but something more like weekly or monthly rebalancing might be better, especially when the seas get rocky and some likelihood looms for a further significant correction. Like you say, a symmetrical triangle might break in any direction, and a 'coil' sure seems to be winding up to spring.