I'm not going to read all of this, but let me pipe in with some old info...
Years ago, The MoniResearch Newsletter tracked about 225 mutual fund market timer services. Editor Steve Shellins (sp?) claimed, "the group which claimed they primarily used CYCLES for their work were collectively the worst performers". The best performers were those who use "relative strength and sector rotation"... I was in the latter camp. (Nowdays, any analyst who even mentions the word "cycles" for timing market swings immediately gets onto my ignore list.)
The primary reason "indicators don't work"... is because people don't know how to use them correctly!! (Not saying all of them work, but some do when properly applied... which may not be the conventional wisdom about how to apply them.)